./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/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_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/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_72110411-dfc7-46ab-952f-cff9b540cf10/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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- 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 12:06:55,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:06:55,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:06:55,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:06:55,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:06:55,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:06:55,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:06:55,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:06:55,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:06:55,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:06:55,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:06:55,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:06:55,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:06:55,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:06:55,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:06:55,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:06:55,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:06:55,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:06:55,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:06:55,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:06:55,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:06:55,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:06:55,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:06:55,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:06:55,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:06:55,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:06:55,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:06:55,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:06:55,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:06:55,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:06:55,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:06:55,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:06:55,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:06:55,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:06:55,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:06:55,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:06:55,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:06:55,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:06:55,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:06:55,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:06:55,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:06:55,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:06:55,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:06:55,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:06:55,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:06:55,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:06:55,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:06:55,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:06:55,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:06:55,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:06:55,909 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:06:55,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:06:55,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:06:55,911 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:06:55,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:06:55,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:06:55,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:06:55,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:06:55,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:06:55,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:06:55,913 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:06:55,913 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:06:55,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:06:55,914 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:06:55,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:06:55,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:06:55,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:06:55,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:06:55,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:55,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:06:55,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:06:55,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:06:55,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:06:55,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:06:55,917 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:06:55,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:06:55,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:06:55,918 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_72110411-dfc7-46ab-952f-cff9b540cf10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2022-11-16 12:06:56,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:06:56,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:06:56,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:06:56,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:06:56,212 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:06:56,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/stack-2.i [2022-11-16 12:06:56,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/data/ed573d72a/24fd4f04cdb44192a8b6f074c6c43c20/FLAG5c24c28ea [2022-11-16 12:06:56,939 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:06:56,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/sv-benchmarks/c/pthread/stack-2.i [2022-11-16 12:06:56,962 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/data/ed573d72a/24fd4f04cdb44192a8b6f074c6c43c20/FLAG5c24c28ea [2022-11-16 12:06:57,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/data/ed573d72a/24fd4f04cdb44192a8b6f074c6c43c20 [2022-11-16 12:06:57,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:06:57,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:06:57,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:57,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:06:57,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:06:57,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:57,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fb8986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57, skipping insertion in model container [2022-11-16 12:06:57,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:57,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:06:57,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:06:57,817 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_72110411-dfc7-46ab-952f-cff9b540cf10/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-11-16 12:06:57,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:57,878 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:06:57,906 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_72110411-dfc7-46ab-952f-cff9b540cf10/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-11-16 12:06:57,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:06:57,977 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:06:57,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57 WrapperNode [2022-11-16 12:06:57,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:06:57,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:57,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:06:57,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:06:57,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,031 INFO L138 Inliner]: procedures = 277, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 169 [2022-11-16 12:06:58,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:06:58,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:06:58,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:06:58,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:06:58,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:06:58,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:06:58,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:06:58,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:06:58,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (1/1) ... [2022-11-16 12:06:58,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:06:58,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:58,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:06:58,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:06:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 12:06:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 12:06:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 12:06:58,163 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 12:06:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:06:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:06:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:06:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:06:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:06:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:06:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:06:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:06:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:06:58,166 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 12:06:58,320 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:06:58,322 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:06:58,690 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:06:58,700 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:06:58,700 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:06:58,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:58 BoogieIcfgContainer [2022-11-16 12:06:58,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:06:58,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:06:58,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:06:58,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:06:58,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:06:57" (1/3) ... [2022-11-16 12:06:58,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f43ab0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:58, skipping insertion in model container [2022-11-16 12:06:58,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:06:57" (2/3) ... [2022-11-16 12:06:58,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f43ab0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:06:58, skipping insertion in model container [2022-11-16 12:06:58,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:06:58" (3/3) ... [2022-11-16 12:06:58,713 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2022-11-16 12:06:58,723 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:06:58,734 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:06:58,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:06:58,735 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:06:58,850 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:06:58,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 199 transitions, 414 flow [2022-11-16 12:06:58,994 INFO L130 PetriNetUnfolder]: 10/197 cut-off events. [2022-11-16 12:06:58,994 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:06:59,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 10/197 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. 0/179 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-16 12:06:59,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 199 transitions, 414 flow [2022-11-16 12:06:59,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 187 transitions, 383 flow [2022-11-16 12:06:59,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:06:59,026 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;@5000ae50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:06:59,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 12:06:59,049 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-11-16 12:06:59,049 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:06:59,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:59,050 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] [2022-11-16 12:06:59,051 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 12:06:59,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:59,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1165350605, now seen corresponding path program 1 times [2022-11-16 12:06:59,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:59,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668890645] [2022-11-16 12:06:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:59,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:59,596 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 12:06:59,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:59,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668890645] [2022-11-16 12:06:59,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668890645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:59,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:06:59,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:06:59,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892559831] [2022-11-16 12:06:59,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:59,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:06:59,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:06:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:06:59,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:06:59,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 187 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states 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 12:06:59,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:59,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:06:59,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:59,927 INFO L130 PetriNetUnfolder]: 26/323 cut-off events. [2022-11-16 12:06:59,927 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 12:06:59,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 323 events. 26/323 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1309 event pairs, 2 based on Foata normal form. 40/333 useless extension candidates. Maximal degree in co-relation 348. Up to 36 conditions per place. [2022-11-16 12:06:59,933 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 19 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2022-11-16 12:06:59,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 187 transitions, 438 flow [2022-11-16 12:06:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:06:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:06:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 927 transitions. [2022-11-16 12:06:59,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9316582914572864 [2022-11-16 12:06:59,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 927 transitions. [2022-11-16 12:06:59,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 927 transitions. [2022-11-16 12:06:59,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:59,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 927 transitions. [2022-11-16 12:06:59,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 12:06:59,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:06:59,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:06:59,976 INFO L175 Difference]: Start difference. First operand has 184 places, 187 transitions, 383 flow. Second operand 5 states and 927 transitions. [2022-11-16 12:06:59,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 187 transitions, 438 flow [2022-11-16 12:06:59,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 187 transitions, 427 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:06:59,987 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 392 flow [2022-11-16 12:06:59,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2022-11-16 12:06:59,993 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 0 predicate places. [2022-11-16 12:06:59,994 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 392 flow [2022-11-16 12:06:59,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states 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 12:06:59,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:59,995 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:59,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:06:59,996 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 12:06:59,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:59,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1747112, now seen corresponding path program 1 times [2022-11-16 12:06:59,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:59,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158279737] [2022-11-16 12:06:59,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:59,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:00,163 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 12:07:00,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:00,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158279737] [2022-11-16 12:07:00,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158279737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:00,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:00,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333226736] [2022-11-16 12:07:00,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:00,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:00,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:00,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:00,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:00,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:07:00,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 12:07:00,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:00,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:07:00,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:00,341 INFO L130 PetriNetUnfolder]: 23/272 cut-off events. [2022-11-16 12:07:00,341 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-16 12:07:00,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 272 events. 23/272 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1092 event pairs, 3 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 301. Up to 21 conditions per place. [2022-11-16 12:07:00,352 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 12 selfloop transitions, 8 changer transitions 0/184 dead transitions. [2022-11-16 12:07:00,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 184 transitions, 439 flow [2022-11-16 12:07:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 903 transitions. [2022-11-16 12:07:00,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.907537688442211 [2022-11-16 12:07:00,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 903 transitions. [2022-11-16 12:07:00,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 903 transitions. [2022-11-16 12:07:00,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:00,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 903 transitions. [2022-11-16 12:07:00,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 12:07:00,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:07:00,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:07:00,367 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 392 flow. Second operand 5 states and 903 transitions. [2022-11-16 12:07:00,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 184 transitions, 439 flow [2022-11-16 12:07:00,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 184 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:00,375 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 410 flow [2022-11-16 12:07:00,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2022-11-16 12:07:00,377 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 3 predicate places. [2022-11-16 12:07:00,378 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 410 flow [2022-11-16 12:07:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 12:07:00,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:00,380 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, 1, 1, 1, 1] [2022-11-16 12:07:00,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:07:00,381 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 12:07:00,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:00,383 INFO L85 PathProgramCache]: Analyzing trace with hash 54161040, now seen corresponding path program 1 times [2022-11-16 12:07:00,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:00,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438798553] [2022-11-16 12:07:00,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:00,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:00,598 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 12:07:00,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:00,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438798553] [2022-11-16 12:07:00,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438798553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:00,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755024701] [2022-11-16 12:07:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:00,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:00,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:00,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:00,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:07:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:00,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:00,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:00,944 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 12:07:00,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:00,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755024701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:00,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:00,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:07:00,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054249554] [2022-11-16 12:07:00,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:00,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:00,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:07:00,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:07:00,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 179.33333333333334) internal successors, (1076), 6 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states 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 12:07:00,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:00,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:07:00,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:01,115 INFO L130 PetriNetUnfolder]: 24/317 cut-off events. [2022-11-16 12:07:01,115 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-16 12:07:01,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 317 events. 24/317 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1222 event pairs, 2 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 361. Up to 15 conditions per place. [2022-11-16 12:07:01,120 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 17 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-11-16 12:07:01,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 187 transitions, 471 flow [2022-11-16 12:07:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:07:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1263 transitions. [2022-11-16 12:07:01,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9066762383345298 [2022-11-16 12:07:01,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1263 transitions. [2022-11-16 12:07:01,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1263 transitions. [2022-11-16 12:07:01,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:01,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1263 transitions. [2022-11-16 12:07:01,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states 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 12:07:01,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 12:07:01,133 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 12:07:01,133 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 410 flow. Second operand 7 states and 1263 transitions. [2022-11-16 12:07:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 187 transitions, 471 flow [2022-11-16 12:07:01,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 187 transitions, 459 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:01,142 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 406 flow [2022-11-16 12:07:01,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2022-11-16 12:07:01,145 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 5 predicate places. [2022-11-16 12:07:01,145 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 406 flow [2022-11-16 12:07:01,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.33333333333334) internal successors, (1076), 6 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states 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 12:07:01,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:01,146 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 12:07:01,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:01,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:01,361 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 12:07:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2063993920, now seen corresponding path program 1 times [2022-11-16 12:07:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:01,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522615816] [2022-11-16 12:07:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:01,509 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 12:07:01,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:01,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522615816] [2022-11-16 12:07:01,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522615816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:01,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:01,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50718515] [2022-11-16 12:07:01,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:01,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:07:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:07:01,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:01,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 199 [2022-11-16 12:07:01,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 12:07:01,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:01,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 199 [2022-11-16 12:07:01,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:02,114 INFO L130 PetriNetUnfolder]: 379/2575 cut-off events. [2022-11-16 12:07:02,114 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2022-11-16 12:07:02,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 2575 events. 379/2575 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21362 event pairs, 140 based on Foata normal form. 0/2266 useless extension candidates. Maximal degree in co-relation 2622. Up to 347 conditions per place. [2022-11-16 12:07:02,139 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 58 selfloop transitions, 13 changer transitions 1/229 dead transitions. [2022-11-16 12:07:02,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 229 transitions, 656 flow [2022-11-16 12:07:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:07:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:07:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1421 transitions. [2022-11-16 12:07:02,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8925879396984925 [2022-11-16 12:07:02,149 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1421 transitions. [2022-11-16 12:07:02,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1421 transitions. [2022-11-16 12:07:02,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:02,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1421 transitions. [2022-11-16 12:07:02,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.625) internal successors, (1421), 8 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states 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 12:07:02,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:07:02,159 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:07:02,159 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 406 flow. Second operand 8 states and 1421 transitions. [2022-11-16 12:07:02,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 229 transitions, 656 flow [2022-11-16 12:07:02,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 229 transitions, 645 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:07:02,170 INFO L231 Difference]: Finished difference. Result has 197 places, 191 transitions, 493 flow [2022-11-16 12:07:02,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=493, PETRI_PLACES=197, PETRI_TRANSITIONS=191} [2022-11-16 12:07:02,172 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 13 predicate places. [2022-11-16 12:07:02,173 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 191 transitions, 493 flow [2022-11-16 12:07:02,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 12:07:02,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:02,173 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] [2022-11-16 12:07:02,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:07:02,174 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 12:07:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1517023906, now seen corresponding path program 1 times [2022-11-16 12:07:02,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:02,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575537479] [2022-11-16 12:07:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:02,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:02,381 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 12:07:02,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:02,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575537479] [2022-11-16 12:07:02,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575537479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:02,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:02,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:02,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684455327] [2022-11-16 12:07:02,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:02,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:02,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:02,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:02,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 199 [2022-11-16 12:07:02,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 191 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 12:07:02,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:02,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 199 [2022-11-16 12:07:02,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:02,881 INFO L130 PetriNetUnfolder]: 226/2048 cut-off events. [2022-11-16 12:07:02,882 INFO L131 PetriNetUnfolder]: For 401/493 co-relation queries the response was YES. [2022-11-16 12:07:02,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2048 events. 226/2048 cut-off events. For 401/493 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15671 event pairs, 118 based on Foata normal form. 22/1861 useless extension candidates. Maximal degree in co-relation 2357. Up to 335 conditions per place. [2022-11-16 12:07:02,900 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 33 selfloop transitions, 6 changer transitions 0/207 dead transitions. [2022-11-16 12:07:02,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 207 transitions, 616 flow [2022-11-16 12:07:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 899 transitions. [2022-11-16 12:07:02,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9035175879396985 [2022-11-16 12:07:02,904 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 899 transitions. [2022-11-16 12:07:02,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 899 transitions. [2022-11-16 12:07:02,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:02,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 899 transitions. [2022-11-16 12:07:02,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.8) internal successors, (899), 5 states have internal predecessors, (899), 0 states have call successors, (0), 0 states 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 12:07:02,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:07:02,911 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:07:02,911 INFO L175 Difference]: Start difference. First operand has 197 places, 191 transitions, 493 flow. Second operand 5 states and 899 transitions. [2022-11-16 12:07:02,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 207 transitions, 616 flow [2022-11-16 12:07:02,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 207 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:07:02,919 INFO L231 Difference]: Finished difference. Result has 204 places, 193 transitions, 527 flow [2022-11-16 12:07:02,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=527, PETRI_PLACES=204, PETRI_TRANSITIONS=193} [2022-11-16 12:07:02,921 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 20 predicate places. [2022-11-16 12:07:02,921 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 193 transitions, 527 flow [2022-11-16 12:07:02,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 12:07:02,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:02,922 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] [2022-11-16 12:07:02,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:07:02,922 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 12:07:02,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:02,923 INFO L85 PathProgramCache]: Analyzing trace with hash 98013965, now seen corresponding path program 1 times [2022-11-16 12:07:02,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:02,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844994322] [2022-11-16 12:07:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:02,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:03,039 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 12:07:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:03,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844994322] [2022-11-16 12:07:03,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844994322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:03,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:03,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:03,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196805457] [2022-11-16 12:07:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:03,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:03,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:03,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:03,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:07:03,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 193 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 12:07:03,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:03,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:07:03,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:03,341 INFO L130 PetriNetUnfolder]: 74/1332 cut-off events. [2022-11-16 12:07:03,341 INFO L131 PetriNetUnfolder]: For 232/291 co-relation queries the response was YES. [2022-11-16 12:07:03,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 1332 events. 74/1332 cut-off events. For 232/291 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8501 event pairs, 19 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 1491. Up to 102 conditions per place. [2022-11-16 12:07:03,355 INFO L137 encePairwiseOnDemand]: 192/199 looper letters, 19 selfloop transitions, 4 changer transitions 0/202 dead transitions. [2022-11-16 12:07:03,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 202 transitions, 597 flow [2022-11-16 12:07:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 911 transitions. [2022-11-16 12:07:03,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9155778894472362 [2022-11-16 12:07:03,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 911 transitions. [2022-11-16 12:07:03,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 911 transitions. [2022-11-16 12:07:03,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:03,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 911 transitions. [2022-11-16 12:07:03,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states 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 12:07:03,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:07:03,365 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:07:03,365 INFO L175 Difference]: Start difference. First operand has 204 places, 193 transitions, 527 flow. Second operand 5 states and 911 transitions. [2022-11-16 12:07:03,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 202 transitions, 597 flow [2022-11-16 12:07:03,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 202 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:03,372 INFO L231 Difference]: Finished difference. Result has 210 places, 196 transitions, 557 flow [2022-11-16 12:07:03,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=557, PETRI_PLACES=210, PETRI_TRANSITIONS=196} [2022-11-16 12:07:03,376 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 26 predicate places. [2022-11-16 12:07:03,376 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 196 transitions, 557 flow [2022-11-16 12:07:03,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.5) internal successors, (714), 4 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 12:07:03,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:03,378 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] [2022-11-16 12:07:03,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:07:03,379 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 12:07:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1288823999, now seen corresponding path program 1 times [2022-11-16 12:07:03,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:03,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991554385] [2022-11-16 12:07:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:03,552 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 12:07:03,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:03,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991554385] [2022-11-16 12:07:03,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991554385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:03,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:03,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:03,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994722355] [2022-11-16 12:07:03,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:03,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:03,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:03,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:07:03,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 196 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 12:07:03,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:03,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:07:03,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:03,811 INFO L130 PetriNetUnfolder]: 47/1176 cut-off events. [2022-11-16 12:07:03,811 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-16 12:07:03,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 1176 events. 47/1176 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6478 event pairs, 12 based on Foata normal form. 12/1132 useless extension candidates. Maximal degree in co-relation 1400. Up to 42 conditions per place. [2022-11-16 12:07:03,818 INFO L137 encePairwiseOnDemand]: 195/199 looper letters, 12 selfloop transitions, 4 changer transitions 0/195 dead transitions. [2022-11-16 12:07:03,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 195 transitions, 574 flow [2022-11-16 12:07:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2022-11-16 12:07:03,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9195979899497487 [2022-11-16 12:07:03,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 549 transitions. [2022-11-16 12:07:03,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 549 transitions. [2022-11-16 12:07:03,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:03,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 549 transitions. [2022-11-16 12:07:03,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states 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 12:07:03,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 12:07:03,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 12:07:03,827 INFO L175 Difference]: Start difference. First operand has 210 places, 196 transitions, 557 flow. Second operand 3 states and 549 transitions. [2022-11-16 12:07:03,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 195 transitions, 574 flow [2022-11-16 12:07:03,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 195 transitions, 566 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:03,833 INFO L231 Difference]: Finished difference. Result has 209 places, 193 transitions, 535 flow [2022-11-16 12:07:03,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=209, PETRI_TRANSITIONS=193} [2022-11-16 12:07:03,834 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 25 predicate places. [2022-11-16 12:07:03,834 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 193 transitions, 535 flow [2022-11-16 12:07:03,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 12:07:03,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:03,835 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:03,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:07:03,836 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 12:07:03,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1457055770, now seen corresponding path program 1 times [2022-11-16 12:07:03,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:03,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596824280] [2022-11-16 12:07:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:04,015 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 12:07:04,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:04,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596824280] [2022-11-16 12:07:04,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596824280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:04,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:04,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:04,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165638481] [2022-11-16 12:07:04,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:04,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:04,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-11-16 12:07:04,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 193 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states 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 12:07:04,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:04,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-11-16 12:07:04,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:04,435 INFO L130 PetriNetUnfolder]: 101/1489 cut-off events. [2022-11-16 12:07:04,435 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-16 12:07:04,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2233 conditions, 1489 events. 101/1489 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8853 event pairs, 36 based on Foata normal form. 6/1429 useless extension candidates. Maximal degree in co-relation 1372. Up to 143 conditions per place. [2022-11-16 12:07:04,446 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 51 selfloop transitions, 9 changer transitions 0/223 dead transitions. [2022-11-16 12:07:04,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 223 transitions, 738 flow [2022-11-16 12:07:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:07:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:07:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1389 transitions. [2022-11-16 12:07:04,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8724874371859297 [2022-11-16 12:07:04,450 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1389 transitions. [2022-11-16 12:07:04,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1389 transitions. [2022-11-16 12:07:04,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:04,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1389 transitions. [2022-11-16 12:07:04,455 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 12:07:04,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:07:04,459 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:07:04,460 INFO L175 Difference]: Start difference. First operand has 209 places, 193 transitions, 535 flow. Second operand 8 states and 1389 transitions. [2022-11-16 12:07:04,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 223 transitions, 738 flow [2022-11-16 12:07:04,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:04,466 INFO L231 Difference]: Finished difference. Result has 218 places, 197 transitions, 582 flow [2022-11-16 12:07:04,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=582, PETRI_PLACES=218, PETRI_TRANSITIONS=197} [2022-11-16 12:07:04,467 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 34 predicate places. [2022-11-16 12:07:04,467 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 197 transitions, 582 flow [2022-11-16 12:07:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states 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 12:07:04,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:04,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:04,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:07:04,469 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 12:07:04,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1706447169, now seen corresponding path program 1 times [2022-11-16 12:07:04,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:04,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076016253] [2022-11-16 12:07:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:04,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:04,619 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 12:07:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:04,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076016253] [2022-11-16 12:07:04,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076016253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:04,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:04,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:04,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821937094] [2022-11-16 12:07:04,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:04,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:04,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:04,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:04,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:04,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-11-16 12:07:04,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 197 transitions, 582 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:04,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:04,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-11-16 12:07:04,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:05,216 INFO L130 PetriNetUnfolder]: 150/2151 cut-off events. [2022-11-16 12:07:05,217 INFO L131 PetriNetUnfolder]: For 399/399 co-relation queries the response was YES. [2022-11-16 12:07:05,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 2151 events. 150/2151 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14377 event pairs, 41 based on Foata normal form. 8/2080 useless extension candidates. Maximal degree in co-relation 2729. Up to 199 conditions per place. [2022-11-16 12:07:05,235 INFO L137 encePairwiseOnDemand]: 189/199 looper letters, 53 selfloop transitions, 14 changer transitions 0/230 dead transitions. [2022-11-16 12:07:05,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 230 transitions, 835 flow [2022-11-16 12:07:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:07:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:07:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1388 transitions. [2022-11-16 12:07:05,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871859296482412 [2022-11-16 12:07:05,240 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1388 transitions. [2022-11-16 12:07:05,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1388 transitions. [2022-11-16 12:07:05,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:05,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1388 transitions. [2022-11-16 12:07:05,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.5) internal successors, (1388), 8 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states 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 12:07:05,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:07:05,249 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:07:05,249 INFO L175 Difference]: Start difference. First operand has 218 places, 197 transitions, 582 flow. Second operand 8 states and 1388 transitions. [2022-11-16 12:07:05,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 230 transitions, 835 flow [2022-11-16 12:07:05,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 230 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:05,256 INFO L231 Difference]: Finished difference. Result has 226 places, 206 transitions, 696 flow [2022-11-16 12:07:05,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=696, PETRI_PLACES=226, PETRI_TRANSITIONS=206} [2022-11-16 12:07:05,258 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 42 predicate places. [2022-11-16 12:07:05,258 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 206 transitions, 696 flow [2022-11-16 12:07:05,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:05,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:05,259 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, 1, 1, 1, 1] [2022-11-16 12:07:05,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:07:05,259 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 12:07:05,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash 43678379, now seen corresponding path program 1 times [2022-11-16 12:07:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:05,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294676732] [2022-11-16 12:07:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:05,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:05,432 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 12:07:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:05,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294676732] [2022-11-16 12:07:05,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294676732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:05,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100160727] [2022-11-16 12:07:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:05,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:05,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:05,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:05,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:07:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:05,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:05,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:05,804 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 12:07:05,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:06,018 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 12:07:06,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100160727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:06,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:06,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:07:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732675410] [2022-11-16 12:07:06,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:06,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:07:06,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:06,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:07:06,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:07:06,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 199 [2022-11-16 12:07:06,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 206 transitions, 696 flow. Second operand has 12 states, 12 states have (on average 175.25) internal successors, (2103), 12 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states 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 12:07:06,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:06,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 199 [2022-11-16 12:07:06,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:06,964 INFO L130 PetriNetUnfolder]: 170/3003 cut-off events. [2022-11-16 12:07:06,965 INFO L131 PetriNetUnfolder]: For 1042/1048 co-relation queries the response was YES. [2022-11-16 12:07:06,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 3003 events. 170/3003 cut-off events. For 1042/1048 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 20297 event pairs, 42 based on Foata normal form. 24/2912 useless extension candidates. Maximal degree in co-relation 3911. Up to 117 conditions per place. [2022-11-16 12:07:06,989 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 65 selfloop transitions, 26 changer transitions 0/265 dead transitions. [2022-11-16 12:07:06,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 265 transitions, 1105 flow [2022-11-16 12:07:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:07:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:07:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3183 transitions. [2022-11-16 12:07:06,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8886097152428811 [2022-11-16 12:07:06,997 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3183 transitions. [2022-11-16 12:07:06,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3183 transitions. [2022-11-16 12:07:06,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:06,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3183 transitions. [2022-11-16 12:07:07,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 176.83333333333334) internal successors, (3183), 18 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states 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 12:07:07,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states 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 12:07:07,015 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states 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 12:07:07,015 INFO L175 Difference]: Start difference. First operand has 226 places, 206 transitions, 696 flow. Second operand 18 states and 3183 transitions. [2022-11-16 12:07:07,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 265 transitions, 1105 flow [2022-11-16 12:07:07,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 265 transitions, 1097 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:07,025 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 866 flow [2022-11-16 12:07:07,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=866, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2022-11-16 12:07:07,026 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 60 predicate places. [2022-11-16 12:07:07,026 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 866 flow [2022-11-16 12:07:07,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 175.25) internal successors, (2103), 12 states have internal predecessors, (2103), 0 states have call successors, (0), 0 states 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 12:07:07,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:07,027 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, 1, 1, 1, 1] [2022-11-16 12:07:07,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:07,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:07:07,233 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 12:07:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:07,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1354030290, now seen corresponding path program 1 times [2022-11-16 12:07:07,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:07,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623463256] [2022-11-16 12:07:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:07,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:07,410 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 12:07:07,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623463256] [2022-11-16 12:07:07,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623463256] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889142482] [2022-11-16 12:07:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:07,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:07,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:07,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:07,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:07:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:07,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:07,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:07,739 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 12:07:07,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:07,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889142482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:07,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:07,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:07:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964218980] [2022-11-16 12:07:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:07,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:07:07,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 199 [2022-11-16 12:07:07,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 866 flow. Second operand has 6 states, 6 states have (on average 174.66666666666666) internal successors, (1048), 6 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states 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 12:07:07,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:07,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 199 [2022-11-16 12:07:07,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:08,675 INFO L130 PetriNetUnfolder]: 179/3200 cut-off events. [2022-11-16 12:07:08,676 INFO L131 PetriNetUnfolder]: For 1678/1684 co-relation queries the response was YES. [2022-11-16 12:07:08,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 3200 events. 179/3200 cut-off events. For 1678/1684 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 22010 event pairs, 43 based on Foata normal form. 30/3105 useless extension candidates. Maximal degree in co-relation 4273. Up to 245 conditions per place. [2022-11-16 12:07:08,706 INFO L137 encePairwiseOnDemand]: 191/199 looper letters, 49 selfloop transitions, 19 changer transitions 0/242 dead transitions. [2022-11-16 12:07:08,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 242 transitions, 1091 flow [2022-11-16 12:07:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:07:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:07:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1423 transitions. [2022-11-16 12:07:08,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8938442211055276 [2022-11-16 12:07:08,711 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1423 transitions. [2022-11-16 12:07:08,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1423 transitions. [2022-11-16 12:07:08,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:08,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1423 transitions. [2022-11-16 12:07:08,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.875) internal successors, (1423), 8 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states 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 12:07:08,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:07:08,722 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:07:08,722 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 866 flow. Second operand 8 states and 1423 transitions. [2022-11-16 12:07:08,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 242 transitions, 1091 flow [2022-11-16 12:07:08,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 242 transitions, 1034 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-11-16 12:07:08,739 INFO L231 Difference]: Finished difference. Result has 246 places, 224 transitions, 911 flow [2022-11-16 12:07:08,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=246, PETRI_TRANSITIONS=224} [2022-11-16 12:07:08,740 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 62 predicate places. [2022-11-16 12:07:08,740 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 224 transitions, 911 flow [2022-11-16 12:07:08,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.66666666666666) internal successors, (1048), 6 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states 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 12:07:08,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:08,741 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, 1, 1, 1, 1] [2022-11-16 12:07:08,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:07:08,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:08,946 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 12:07:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2125387606, now seen corresponding path program 1 times [2022-11-16 12:07:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:08,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647060179] [2022-11-16 12:07:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:09,096 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 12:07:09,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:09,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647060179] [2022-11-16 12:07:09,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647060179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:09,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:09,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846022774] [2022-11-16 12:07:09,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:09,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:09,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:09,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:09,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:07:09,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 224 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 12:07:09,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:09,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:07:09,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:09,868 INFO L130 PetriNetUnfolder]: 130/3007 cut-off events. [2022-11-16 12:07:09,868 INFO L131 PetriNetUnfolder]: For 1283/1283 co-relation queries the response was YES. [2022-11-16 12:07:09,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 3007 events. 130/3007 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 19264 event pairs, 26 based on Foata normal form. 24/2917 useless extension candidates. Maximal degree in co-relation 4082. Up to 133 conditions per place. [2022-11-16 12:07:09,906 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 12 selfloop transitions, 8 changer transitions 0/227 dead transitions. [2022-11-16 12:07:09,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 227 transitions, 961 flow [2022-11-16 12:07:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 903 transitions. [2022-11-16 12:07:09,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.907537688442211 [2022-11-16 12:07:09,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 903 transitions. [2022-11-16 12:07:09,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 903 transitions. [2022-11-16 12:07:09,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:09,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 903 transitions. [2022-11-16 12:07:09,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 12:07:09,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:07:09,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 12:07:09,916 INFO L175 Difference]: Start difference. First operand has 246 places, 224 transitions, 911 flow. Second operand 5 states and 903 transitions. [2022-11-16 12:07:09,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 227 transitions, 961 flow [2022-11-16 12:07:09,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 227 transitions, 945 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:09,933 INFO L231 Difference]: Finished difference. Result has 247 places, 224 transitions, 915 flow [2022-11-16 12:07:09,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=915, PETRI_PLACES=247, PETRI_TRANSITIONS=224} [2022-11-16 12:07:09,936 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 63 predicate places. [2022-11-16 12:07:09,936 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 224 transitions, 915 flow [2022-11-16 12:07:09,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 12:07:09,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:09,937 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, 1, 1, 1, 1] [2022-11-16 12:07:09,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:07:09,937 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 12:07:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1462506882, now seen corresponding path program 1 times [2022-11-16 12:07:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:09,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432495865] [2022-11-16 12:07:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:09,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:10,144 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 12:07:10,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:10,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432495865] [2022-11-16 12:07:10,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432495865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:10,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194538227] [2022-11-16 12:07:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:10,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:10,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:10,146 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:10,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:07:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:10,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:10,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:10,515 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 12:07:10,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:10,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194538227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:10,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:10,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:07:10,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120469909] [2022-11-16 12:07:10,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:10,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:10,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:10,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:10,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:07:10,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:07:10,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 224 transitions, 915 flow. Second operand has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 12:07:10,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:10,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:07:10,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:11,422 INFO L130 PetriNetUnfolder]: 126/2979 cut-off events. [2022-11-16 12:07:11,422 INFO L131 PetriNetUnfolder]: For 1344/1344 co-relation queries the response was YES. [2022-11-16 12:07:11,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4713 conditions, 2979 events. 126/2979 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 19008 event pairs, 21 based on Foata normal form. 24/2889 useless extension candidates. Maximal degree in co-relation 4137. Up to 130 conditions per place. [2022-11-16 12:07:11,454 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 17 selfloop transitions, 6 changer transitions 0/230 dead transitions. [2022-11-16 12:07:11,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 230 transitions, 981 flow [2022-11-16 12:07:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:07:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1263 transitions. [2022-11-16 12:07:11,458 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9066762383345298 [2022-11-16 12:07:11,458 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1263 transitions. [2022-11-16 12:07:11,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1263 transitions. [2022-11-16 12:07:11,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:11,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1263 transitions. [2022-11-16 12:07:11,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states 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 12:07:11,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 12:07:11,466 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 12:07:11,467 INFO L175 Difference]: Start difference. First operand has 247 places, 224 transitions, 915 flow. Second operand 7 states and 1263 transitions. [2022-11-16 12:07:11,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 230 transitions, 981 flow [2022-11-16 12:07:11,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 230 transitions, 969 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:11,482 INFO L231 Difference]: Finished difference. Result has 249 places, 223 transitions, 911 flow [2022-11-16 12:07:11,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=911, PETRI_PLACES=249, PETRI_TRANSITIONS=223} [2022-11-16 12:07:11,485 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 65 predicate places. [2022-11-16 12:07:11,485 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 223 transitions, 911 flow [2022-11-16 12:07:11,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 179.16666666666666) internal successors, (1075), 6 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 12:07:11,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:11,486 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, 1, 1, 1, 1] [2022-11-16 12:07:11,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:11,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:11,692 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 12:07:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2001345019, now seen corresponding path program 1 times [2022-11-16 12:07:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:11,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848164586] [2022-11-16 12:07:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:11,970 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 12:07:11,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:11,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848164586] [2022-11-16 12:07:11,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848164586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:11,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804313523] [2022-11-16 12:07:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:11,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:11,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:11,973 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:11,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:07:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:12,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:12,369 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 12:07:12,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:12,743 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 12:07:12,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804313523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:12,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:12,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:07:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340390737] [2022-11-16 12:07:12,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:12,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:07:12,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:07:12,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:07:12,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-11-16 12:07:12,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 223 transitions, 911 flow. Second operand has 16 states, 16 states have (on average 169.5) internal successors, (2712), 16 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states 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 12:07:12,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:12,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-11-16 12:07:12,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:13,956 INFO L130 PetriNetUnfolder]: 244/3560 cut-off events. [2022-11-16 12:07:13,956 INFO L131 PetriNetUnfolder]: For 2070/2070 co-relation queries the response was YES. [2022-11-16 12:07:13,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5968 conditions, 3560 events. 244/3560 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 26343 event pairs, 62 based on Foata normal form. 38/3460 useless extension candidates. Maximal degree in co-relation 4960. Up to 130 conditions per place. [2022-11-16 12:07:13,994 INFO L137 encePairwiseOnDemand]: 186/199 looper letters, 81 selfloop transitions, 47 changer transitions 0/290 dead transitions. [2022-11-16 12:07:13,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 290 transitions, 1413 flow [2022-11-16 12:07:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:07:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 12:07:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3926 transitions. [2022-11-16 12:07:14,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577670963513219 [2022-11-16 12:07:14,002 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3926 transitions. [2022-11-16 12:07:14,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3926 transitions. [2022-11-16 12:07:14,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:14,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3926 transitions. [2022-11-16 12:07:14,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 170.69565217391303) internal successors, (3926), 23 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states 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 12:07:14,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 199.0) internal successors, (4776), 24 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states 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 12:07:14,022 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 199.0) internal successors, (4776), 24 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states 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 12:07:14,023 INFO L175 Difference]: Start difference. First operand has 249 places, 223 transitions, 911 flow. Second operand 23 states and 3926 transitions. [2022-11-16 12:07:14,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 290 transitions, 1413 flow [2022-11-16 12:07:14,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 290 transitions, 1402 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:07:14,038 INFO L231 Difference]: Finished difference. Result has 270 places, 235 transitions, 1110 flow [2022-11-16 12:07:14,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1110, PETRI_PLACES=270, PETRI_TRANSITIONS=235} [2022-11-16 12:07:14,040 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 86 predicate places. [2022-11-16 12:07:14,040 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 235 transitions, 1110 flow [2022-11-16 12:07:14,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 169.5) internal successors, (2712), 16 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states 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 12:07:14,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:14,041 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, 1, 1, 1, 1] [2022-11-16 12:07:14,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:14,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:07:14,247 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 12:07:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1082014403, now seen corresponding path program 1 times [2022-11-16 12:07:14,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413791542] [2022-11-16 12:07:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:14,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,524 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 12:07:14,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:14,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413791542] [2022-11-16 12:07:14,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413791542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:14,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201897001] [2022-11-16 12:07:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:14,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:14,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:14,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:07:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:14,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:14,889 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 12:07:14,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:15,165 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 12:07:15,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201897001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:15,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:15,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-16 12:07:15,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24806193] [2022-11-16 12:07:15,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:15,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:07:15,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:15,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:07:15,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:07:15,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-11-16 12:07:15,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 235 transitions, 1110 flow. Second operand has 14 states, 14 states have (on average 170.14285714285714) internal successors, (2382), 14 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 12:07:15,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:15,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-11-16 12:07:15,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:16,830 INFO L130 PetriNetUnfolder]: 391/5388 cut-off events. [2022-11-16 12:07:16,830 INFO L131 PetriNetUnfolder]: For 3641/3641 co-relation queries the response was YES. [2022-11-16 12:07:16,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9232 conditions, 5388 events. 391/5388 cut-off events. For 3641/3641 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 42452 event pairs, 58 based on Foata normal form. 53/5239 useless extension candidates. Maximal degree in co-relation 8192. Up to 276 conditions per place. [2022-11-16 12:07:16,878 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 118 selfloop transitions, 78 changer transitions 0/358 dead transitions. [2022-11-16 12:07:16,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 358 transitions, 2360 flow [2022-11-16 12:07:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:07:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:07:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4109 transitions. [2022-11-16 12:07:16,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8603433835845896 [2022-11-16 12:07:16,885 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4109 transitions. [2022-11-16 12:07:16,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4109 transitions. [2022-11-16 12:07:16,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:16,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4109 transitions. [2022-11-16 12:07:16,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.20833333333334) internal successors, (4109), 24 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states 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 12:07:16,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 199.0) internal successors, (4975), 25 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states 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 12:07:16,903 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 199.0) internal successors, (4975), 25 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states 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 12:07:16,903 INFO L175 Difference]: Start difference. First operand has 270 places, 235 transitions, 1110 flow. Second operand 24 states and 4109 transitions. [2022-11-16 12:07:16,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 358 transitions, 2360 flow [2022-11-16 12:07:16,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 358 transitions, 2183 flow, removed 78 selfloop flow, removed 5 redundant places. [2022-11-16 12:07:16,930 INFO L231 Difference]: Finished difference. Result has 297 places, 289 transitions, 1846 flow [2022-11-16 12:07:16,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1846, PETRI_PLACES=297, PETRI_TRANSITIONS=289} [2022-11-16 12:07:16,931 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 113 predicate places. [2022-11-16 12:07:16,931 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 289 transitions, 1846 flow [2022-11-16 12:07:16,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 170.14285714285714) internal successors, (2382), 14 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 12:07:16,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:16,932 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, 1, 1, 1, 1] [2022-11-16 12:07:16,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:17,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:07:17,138 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 12:07:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash 72191074, now seen corresponding path program 2 times [2022-11-16 12:07:17,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:17,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67903504] [2022-11-16 12:07:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:17,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:17,622 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 12:07:17,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67903504] [2022-11-16 12:07:17,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67903504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646136840] [2022-11-16 12:07:17,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:07:17,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:17,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:17,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:17,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:07:17,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:07:17,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:17,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:07:17,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:18,217 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 12:07:18,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:18,705 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 12:07:18,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646136840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:18,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:18,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-16 12:07:18,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795866729] [2022-11-16 12:07:18,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:18,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:07:18,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:18,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:07:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:07:18,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 199 [2022-11-16 12:07:18,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 289 transitions, 1846 flow. Second operand has 24 states, 24 states have (on average 175.625) internal successors, (4215), 24 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states 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 12:07:18,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:18,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 199 [2022-11-16 12:07:18,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:21,619 INFO L130 PetriNetUnfolder]: 458/8023 cut-off events. [2022-11-16 12:07:21,619 INFO L131 PetriNetUnfolder]: For 7996/7999 co-relation queries the response was YES. [2022-11-16 12:07:21,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14030 conditions, 8023 events. 458/8023 cut-off events. For 7996/7999 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 59643 event pairs, 128 based on Foata normal form. 48/7746 useless extension candidates. Maximal degree in co-relation 12995. Up to 405 conditions per place. [2022-11-16 12:07:21,684 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 176 selfloop transitions, 70 changer transitions 0/428 dead transitions. [2022-11-16 12:07:21,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 428 transitions, 3169 flow [2022-11-16 12:07:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:07:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 12:07:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5854 transitions. [2022-11-16 12:07:21,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8914268311253236 [2022-11-16 12:07:21,692 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5854 transitions. [2022-11-16 12:07:21,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5854 transitions. [2022-11-16 12:07:21,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:21,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5854 transitions. [2022-11-16 12:07:21,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 177.3939393939394) internal successors, (5854), 33 states have internal predecessors, (5854), 0 states have call successors, (0), 0 states 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 12:07:21,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 199.0) internal successors, (6766), 34 states have internal predecessors, (6766), 0 states have call successors, (0), 0 states 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 12:07:21,715 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 199.0) internal successors, (6766), 34 states have internal predecessors, (6766), 0 states have call successors, (0), 0 states 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 12:07:21,715 INFO L175 Difference]: Start difference. First operand has 297 places, 289 transitions, 1846 flow. Second operand 33 states and 5854 transitions. [2022-11-16 12:07:21,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 428 transitions, 3169 flow [2022-11-16 12:07:21,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 428 transitions, 3041 flow, removed 60 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:21,757 INFO L231 Difference]: Finished difference. Result has 333 places, 323 transitions, 2362 flow [2022-11-16 12:07:21,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2362, PETRI_PLACES=333, PETRI_TRANSITIONS=323} [2022-11-16 12:07:21,758 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 149 predicate places. [2022-11-16 12:07:21,758 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 323 transitions, 2362 flow [2022-11-16 12:07:21,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 175.625) internal successors, (4215), 24 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states 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 12:07:21,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:21,760 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, 1, 1, 1, 1] [2022-11-16 12:07:21,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:07:21,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:07:21,968 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 12:07:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash 139979875, now seen corresponding path program 1 times [2022-11-16 12:07:21,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:21,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818530671] [2022-11-16 12:07:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:21,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:07:22,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:22,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818530671] [2022-11-16 12:07:22,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818530671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:22,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478361333] [2022-11-16 12:07:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:22,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:22,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:22,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:22,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:07:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:22,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:07:22,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 12:07:23,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 12:07:23,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478361333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:23,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:23,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-16 12:07:23,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119837811] [2022-11-16 12:07:23,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:23,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:07:23,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:23,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:07:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:07:23,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-11-16 12:07:23,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 323 transitions, 2362 flow. Second operand has 18 states, 18 states have (on average 170.11111111111111) internal successors, (3062), 18 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states 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 12:07:23,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:23,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-11-16 12:07:23,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:28,430 INFO L130 PetriNetUnfolder]: 897/12193 cut-off events. [2022-11-16 12:07:28,431 INFO L131 PetriNetUnfolder]: For 12165/12165 co-relation queries the response was YES. [2022-11-16 12:07:28,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22032 conditions, 12193 events. 897/12193 cut-off events. For 12165/12165 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 110035 event pairs, 211 based on Foata normal form. 23/11742 useless extension candidates. Maximal degree in co-relation 20840. Up to 553 conditions per place. [2022-11-16 12:07:28,563 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 190 selfloop transitions, 204 changer transitions 0/556 dead transitions. [2022-11-16 12:07:28,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 556 transitions, 5042 flow [2022-11-16 12:07:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 12:07:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 12:07:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6482 transitions. [2022-11-16 12:07:28,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571806400423169 [2022-11-16 12:07:28,574 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6482 transitions. [2022-11-16 12:07:28,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6482 transitions. [2022-11-16 12:07:28,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:28,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6482 transitions. [2022-11-16 12:07:28,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 170.57894736842104) internal successors, (6482), 38 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states 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 12:07:28,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 199.0) internal successors, (7761), 39 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states 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 12:07:28,613 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 199.0) internal successors, (7761), 39 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states 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 12:07:28,614 INFO L175 Difference]: Start difference. First operand has 333 places, 323 transitions, 2362 flow. Second operand 38 states and 6482 transitions. [2022-11-16 12:07:28,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 556 transitions, 5042 flow [2022-11-16 12:07:28,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 556 transitions, 4920 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-11-16 12:07:28,843 INFO L231 Difference]: Finished difference. Result has 372 places, 442 transitions, 4417 flow [2022-11-16 12:07:28,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4417, PETRI_PLACES=372, PETRI_TRANSITIONS=442} [2022-11-16 12:07:28,844 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 188 predicate places. [2022-11-16 12:07:28,845 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 442 transitions, 4417 flow [2022-11-16 12:07:28,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 170.11111111111111) internal successors, (3062), 18 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states 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 12:07:28,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:28,847 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, 1, 1, 1, 1] [2022-11-16 12:07:28,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:07:29,055 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 12:07:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1180418603, now seen corresponding path program 2 times [2022-11-16 12:07:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:29,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914628223] [2022-11-16 12:07:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:29,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:29,745 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 12:07:29,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:29,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914628223] [2022-11-16 12:07:29,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914628223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:29,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551512536] [2022-11-16 12:07:29,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:07:29,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:29,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:29,748 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:29,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:07:30,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:07:30,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:30,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:07:30,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:30,487 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 12:07:30,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:31,126 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 12:07:31,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551512536] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:31,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:31,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-11-16 12:07:31,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622868237] [2022-11-16 12:07:31,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:31,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:07:31,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:31,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:07:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:07:31,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-11-16 12:07:31,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 442 transitions, 4417 flow. Second operand has 26 states, 26 states have (on average 170.07692307692307) internal successors, (4422), 26 states have internal predecessors, (4422), 0 states have call successors, (0), 0 states 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 12:07:31,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:31,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-11-16 12:07:31,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:39,433 INFO L130 PetriNetUnfolder]: 1418/18170 cut-off events. [2022-11-16 12:07:39,433 INFO L131 PetriNetUnfolder]: For 23048/23048 co-relation queries the response was YES. [2022-11-16 12:07:39,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33730 conditions, 18170 events. 1418/18170 cut-off events. For 23048/23048 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 184420 event pairs, 195 based on Foata normal form. 90/17581 useless extension candidates. Maximal degree in co-relation 32500. Up to 804 conditions per place. [2022-11-16 12:07:39,639 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 308 selfloop transitions, 350 changer transitions 0/820 dead transitions. [2022-11-16 12:07:39,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 820 transitions, 9629 flow [2022-11-16 12:07:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-16 12:07:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-16 12:07:39,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8715 transitions. [2022-11-16 12:07:39,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8587052911616908 [2022-11-16 12:07:39,650 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8715 transitions. [2022-11-16 12:07:39,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8715 transitions. [2022-11-16 12:07:39,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:39,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8715 transitions. [2022-11-16 12:07:39,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 170.88235294117646) internal successors, (8715), 51 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states 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 12:07:39,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 199.0) internal successors, (10348), 52 states have internal predecessors, (10348), 0 states have call successors, (0), 0 states 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 12:07:39,694 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 199.0) internal successors, (10348), 52 states have internal predecessors, (10348), 0 states have call successors, (0), 0 states 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 12:07:39,695 INFO L175 Difference]: Start difference. First operand has 372 places, 442 transitions, 4417 flow. Second operand 51 states and 8715 transitions. [2022-11-16 12:07:39,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 820 transitions, 9629 flow [2022-11-16 12:07:39,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 820 transitions, 9395 flow, removed 113 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:39,908 INFO L231 Difference]: Finished difference. Result has 432 places, 628 transitions, 8074 flow [2022-11-16 12:07:39,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=4307, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8074, PETRI_PLACES=432, PETRI_TRANSITIONS=628} [2022-11-16 12:07:39,910 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 248 predicate places. [2022-11-16 12:07:39,910 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 628 transitions, 8074 flow [2022-11-16 12:07:39,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 170.07692307692307) internal successors, (4422), 26 states have internal predecessors, (4422), 0 states have call successors, (0), 0 states 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 12:07:39,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:39,913 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, 1, 1, 1, 1] [2022-11-16 12:07:39,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:40,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:07:40,119 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 12:07:40,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1944380451, now seen corresponding path program 1 times [2022-11-16 12:07:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:40,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305643080] [2022-11-16 12:07:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:40,991 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 12:07:40,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:40,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305643080] [2022-11-16 12:07:40,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305643080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:40,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501760158] [2022-11-16 12:07:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:40,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:40,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:40,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:41,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:07:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:41,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:07:41,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:41,776 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 12:07:41,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:42,600 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 12:07:42,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501760158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:42,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:42,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-11-16 12:07:42,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457263975] [2022-11-16 12:07:42,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:42,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:07:42,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:42,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:07:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:07:42,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-11-16 12:07:42,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 628 transitions, 8074 flow. Second operand has 24 states, 24 states have (on average 170.5) internal successors, (4092), 24 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states 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 12:07:42,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:42,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-11-16 12:07:42,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:55,745 INFO L130 PetriNetUnfolder]: 2240/27508 cut-off events. [2022-11-16 12:07:55,745 INFO L131 PetriNetUnfolder]: For 44950/44950 co-relation queries the response was YES. [2022-11-16 12:07:56,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52631 conditions, 27508 events. 2240/27508 cut-off events. For 44950/44950 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 308129 event pairs, 210 based on Foata normal form. 134/26619 useless extension candidates. Maximal degree in co-relation 51738. Up to 1292 conditions per place. [2022-11-16 12:07:56,179 INFO L137 encePairwiseOnDemand]: 187/199 looper letters, 196 selfloop transitions, 719 changer transitions 0/1077 dead transitions. [2022-11-16 12:07:56,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1077 transitions, 16185 flow [2022-11-16 12:07:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:07:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 12:07:56,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6643 transitions. [2022-11-16 12:07:56,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8559463986599665 [2022-11-16 12:07:56,188 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6643 transitions. [2022-11-16 12:07:56,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6643 transitions. [2022-11-16 12:07:56,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:56,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6643 transitions. [2022-11-16 12:07:56,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 170.33333333333334) internal successors, (6643), 39 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states 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 12:07:56,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 199.0) internal successors, (7960), 40 states have internal predecessors, (7960), 0 states have call successors, (0), 0 states 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 12:07:56,214 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 199.0) internal successors, (7960), 40 states have internal predecessors, (7960), 0 states have call successors, (0), 0 states 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 12:07:56,214 INFO L175 Difference]: Start difference. First operand has 432 places, 628 transitions, 8074 flow. Second operand 39 states and 6643 transitions. [2022-11-16 12:07:56,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1077 transitions, 16185 flow [2022-11-16 12:07:56,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1077 transitions, 14996 flow, removed 357 selfloop flow, removed 16 redundant places. [2022-11-16 12:07:56,545 INFO L231 Difference]: Finished difference. Result has 451 places, 971 transitions, 14585 flow [2022-11-16 12:07:56,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=7115, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14585, PETRI_PLACES=451, PETRI_TRANSITIONS=971} [2022-11-16 12:07:56,546 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 267 predicate places. [2022-11-16 12:07:56,546 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 971 transitions, 14585 flow [2022-11-16 12:07:56,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 170.5) internal successors, (4092), 24 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states 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 12:07:56,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:56,547 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, 1, 1, 1, 1] [2022-11-16 12:07:56,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-16 12:07:56,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:56,748 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 12:07:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1269205236, now seen corresponding path program 1 times [2022-11-16 12:07:56,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:56,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071159262] [2022-11-16 12:07:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:56,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 12:07:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:57,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071159262] [2022-11-16 12:07:57,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071159262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:57,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402631267] [2022-11-16 12:07:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:57,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:57,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:57,612 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:57,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:07:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:57,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:07:57,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 12:07:58,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 12:07:58,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402631267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:58,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:58,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-16 12:07:58,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410104816] [2022-11-16 12:07:58,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:58,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:07:58,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:58,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:07:58,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:07:58,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 199 [2022-11-16 12:07:58,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 971 transitions, 14585 flow. Second operand has 22 states, 22 states have (on average 170.45454545454547) internal successors, (3750), 22 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states 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 12:07:58,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:58,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 199 [2022-11-16 12:07:58,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:08:22,380 INFO L130 PetriNetUnfolder]: 3411/40521 cut-off events. [2022-11-16 12:08:22,380 INFO L131 PetriNetUnfolder]: For 72680/72680 co-relation queries the response was YES. [2022-11-16 12:08:23,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79660 conditions, 40521 events. 3411/40521 cut-off events. For 72680/72680 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 493172 event pairs, 890 based on Foata normal form. 179/39162 useless extension candidates. Maximal degree in co-relation 78381. Up to 2104 conditions per place. [2022-11-16 12:08:23,247 INFO L137 encePairwiseOnDemand]: 188/199 looper letters, 245 selfloop transitions, 1190 changer transitions 0/1597 dead transitions. [2022-11-16 12:08:23,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1597 transitions, 26485 flow [2022-11-16 12:08:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:08:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 12:08:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5646 transitions. [2022-11-16 12:08:23,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8597533120146186 [2022-11-16 12:08:23,255 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5646 transitions. [2022-11-16 12:08:23,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5646 transitions. [2022-11-16 12:08:23,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:08:23,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5646 transitions. [2022-11-16 12:08:23,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 171.0909090909091) internal successors, (5646), 33 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 12:08:23,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 199.0) internal successors, (6766), 34 states have internal predecessors, (6766), 0 states have call successors, (0), 0 states 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 12:08:23,276 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 199.0) internal successors, (6766), 34 states have internal predecessors, (6766), 0 states have call successors, (0), 0 states 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 12:08:23,276 INFO L175 Difference]: Start difference. First operand has 451 places, 971 transitions, 14585 flow. Second operand 33 states and 5646 transitions. [2022-11-16 12:08:23,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1597 transitions, 26485 flow [2022-11-16 12:08:23,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1597 transitions, 25607 flow, removed 408 selfloop flow, removed 5 redundant places. [2022-11-16 12:08:23,849 INFO L231 Difference]: Finished difference. Result has 475 places, 1458 transitions, 25198 flow [2022-11-16 12:08:23,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=13652, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=25198, PETRI_PLACES=475, PETRI_TRANSITIONS=1458} [2022-11-16 12:08:23,851 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 291 predicate places. [2022-11-16 12:08:23,851 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 1458 transitions, 25198 flow [2022-11-16 12:08:23,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 170.45454545454547) internal successors, (3750), 22 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states 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 12:08:23,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:08:23,852 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, 1, 1, 1, 1] [2022-11-16 12:08:23,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 12:08:24,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:24,059 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 12:08:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash -178325853, now seen corresponding path program 2 times [2022-11-16 12:08:24,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:24,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517680264] [2022-11-16 12:08:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:24,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:25,396 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 12:08:25,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:25,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517680264] [2022-11-16 12:08:25,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517680264] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:25,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021695058] [2022-11-16 12:08:25,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:08:25,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:25,398 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:25,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72110411-dfc7-46ab-952f-cff9b540cf10/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:08:25,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:08:25,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:25,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:08:25,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-16 12:08:26,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:26,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021695058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:26,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:26,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 30 [2022-11-16 12:08:26,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823332786] [2022-11-16 12:08:26,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:26,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:08:26,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:08:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:08:26,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-16 12:08:26,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1458 transitions, 25198 flow. Second operand has 13 states, 13 states have (on average 180.15384615384616) internal successors, (2342), 13 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states 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 12:08:26,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:08:26,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-16 12:08:26,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand