./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:23:55,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:23:55,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:23:55,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:23:55,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:23:55,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:23:55,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:23:55,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:23:55,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:23:55,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:23:55,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:23:55,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:23:56,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:23:56,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:23:56,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:23:56,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:23:56,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:23:56,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:23:56,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:23:56,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:23:56,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:23:56,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:23:56,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:23:56,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:23:56,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:23:56,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:23:56,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:23:56,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:23:56,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:23:56,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:23:56,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:23:56,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:23:56,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:23:56,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:23:56,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:23:56,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:23:56,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:23:56,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:23:56,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:23:56,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:23:56,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:23:56,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:23:56,050 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:23:56,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:23:56,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:23:56,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:23:56,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:23:56,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:23:56,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:23:56,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:23:56,053 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:23:56,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:23:56,054 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:23:56,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:23:56,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:23:56,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:23:56,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:23:56,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:23:56,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:23:56,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:23:56,056 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:23:56,056 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:23:56,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:23:56,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:23:56,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:23:56,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:23:56,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:23:56,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:23:56,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:56,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:23:56,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:23:56,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:23:56,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:23:56,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:23:56,060 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:23:56,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:23:56,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:23:56,060 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_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2022-11-21 17:23:56,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:23:56,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:23:56,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:23:56,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:23:56,453 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:23:56,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-21 17:23:59,489 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:23:59,738 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:23:59,739 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-21 17:23:59,747 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/data/7f74c3c47/aa8c91183aa549e2b8393d4a362d7e03/FLAG4fd539674 [2022-11-21 17:23:59,768 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/data/7f74c3c47/aa8c91183aa549e2b8393d4a362d7e03 [2022-11-21 17:23:59,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:23:59,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:23:59,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:59,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:23:59,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:23:59,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374011f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:59, skipping insertion in model container [2022-11-21 17:23:59,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:59" (1/1) ... [2022-11-21 17:23:59,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:23:59,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:24:00,054 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-21 17:24:00,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:24:00,072 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:24:00,095 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-21 17:24:00,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:24:00,114 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:24:00,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00 WrapperNode [2022-11-21 17:24:00,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:24:00,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:24:00,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:24:00,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:24:00,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,163 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 210 [2022-11-21 17:24:00,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:24:00,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:24:00,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:24:00,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:24:00,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:24:00,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:24:00,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:24:00,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:24:00,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (1/1) ... [2022-11-21 17:24:00,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:24:00,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:00,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:24:00,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:24:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:24:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:24:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:24:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:24:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:24:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:24:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:24:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:24:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:24:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:24:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:24:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:24:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:24:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:24:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:24:00,334 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:24:00,457 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:24:00,459 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:24:01,086 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:24:01,109 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:24:01,109 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-21 17:24:01,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:24:01 BoogieIcfgContainer [2022-11-21 17:24:01,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:24:01,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:24:01,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:24:01,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:24:01,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:23:59" (1/3) ... [2022-11-21 17:24:01,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edb5a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:24:01, skipping insertion in model container [2022-11-21 17:24:01,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:00" (2/3) ... [2022-11-21 17:24:01,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edb5a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:24:01, skipping insertion in model container [2022-11-21 17:24:01,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:24:01" (3/3) ... [2022-11-21 17:24:01,127 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2022-11-21 17:24:01,136 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:24:01,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:24:01,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 17:24:01,147 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:24:01,311 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:24:01,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 329 transitions, 682 flow [2022-11-21 17:24:01,540 INFO L130 PetriNetUnfolder]: 30/326 cut-off events. [2022-11-21 17:24:01,541 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:24:01,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 326 events. 30/326 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 221. Up to 3 conditions per place. [2022-11-21 17:24:01,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 329 transitions, 682 flow [2022-11-21 17:24:01,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 247 transitions, 509 flow [2022-11-21 17:24:01,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:24:01,580 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;@6b669f3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:24:01,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-21 17:24:01,603 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2022-11-21 17:24:01,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:24:01,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:01,605 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] [2022-11-21 17:24:01,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash -895934613, now seen corresponding path program 1 times [2022-11-21 17:24:01,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:01,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654778220] [2022-11-21 17:24:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:01,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:02,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:02,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654778220] [2022-11-21 17:24:02,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654778220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:02,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:02,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:02,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379784281] [2022-11-21 17:24:02,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:02,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:02,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:02,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-21 17:24:02,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 247 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:02,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-21 17:24:02,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:02,552 INFO L130 PetriNetUnfolder]: 17/370 cut-off events. [2022-11-21 17:24:02,553 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-21 17:24:02,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 370 events. 17/370 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 850 event pairs, 0 based on Foata normal form. 24/352 useless extension candidates. Maximal degree in co-relation 386. Up to 44 conditions per place. [2022-11-21 17:24:02,563 INFO L137 encePairwiseOnDemand]: 297/329 looper letters, 58 selfloop transitions, 14 changer transitions 6/266 dead transitions. [2022-11-21 17:24:02,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 266 transitions, 706 flow [2022-11-21 17:24:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:24:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:24:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1451 transitions. [2022-11-21 17:24:02,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8820668693009118 [2022-11-21 17:24:02,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1451 transitions. [2022-11-21 17:24:02,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1451 transitions. [2022-11-21 17:24:02,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:02,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1451 transitions. [2022-11-21 17:24:02,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,625 INFO L175 Difference]: Start difference. First operand has 236 places, 247 transitions, 509 flow. Second operand 5 states and 1451 transitions. [2022-11-21 17:24:02,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 266 transitions, 706 flow [2022-11-21 17:24:02,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 266 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:24:02,640 INFO L231 Difference]: Finished difference. Result has 238 places, 240 transitions, 568 flow [2022-11-21 17:24:02,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=238, PETRI_TRANSITIONS=240} [2022-11-21 17:24:02,648 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 2 predicate places. [2022-11-21 17:24:02,648 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 568 flow [2022-11-21 17:24:02,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:02,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:02,650 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:02,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:24:02,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:02,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:02,651 INFO L85 PathProgramCache]: Analyzing trace with hash -208542109, now seen corresponding path program 1 times [2022-11-21 17:24:02,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:02,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210054216] [2022-11-21 17:24:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:02,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:02,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:02,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210054216] [2022-11-21 17:24:02,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210054216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:02,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041605133] [2022-11-21 17:24:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:02,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:02,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:02,860 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:02,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:24:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:02,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:24:03,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:03,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041605133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:03,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:03,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 17:24:03,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211502400] [2022-11-21 17:24:03,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:03,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:24:03,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:03,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:24:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:24:03,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-21 17:24:03,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 240 transitions, 568 flow. Second operand has 12 states, 12 states have (on average 273.6666666666667) internal successors, (3284), 12 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:03,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-21 17:24:03,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:03,925 INFO L130 PetriNetUnfolder]: 41/775 cut-off events. [2022-11-21 17:24:03,925 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-21 17:24:03,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 775 events. 41/775 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3054 event pairs, 0 based on Foata normal form. 9/709 useless extension candidates. Maximal degree in co-relation 480. Up to 35 conditions per place. [2022-11-21 17:24:03,934 INFO L137 encePairwiseOnDemand]: 306/329 looper letters, 109 selfloop transitions, 62 changer transitions 0/359 dead transitions. [2022-11-21 17:24:03,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 359 transitions, 1250 flow [2022-11-21 17:24:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:24:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:24:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5058 transitions. [2022-11-21 17:24:03,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8541033434650456 [2022-11-21 17:24:03,951 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5058 transitions. [2022-11-21 17:24:03,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5058 transitions. [2022-11-21 17:24:03,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:03,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5058 transitions. [2022-11-21 17:24:03,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 329.0) internal successors, (6251), 19 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,992 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 329.0) internal successors, (6251), 19 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:03,993 INFO L175 Difference]: Start difference. First operand has 238 places, 240 transitions, 568 flow. Second operand 18 states and 5058 transitions. [2022-11-21 17:24:03,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 359 transitions, 1250 flow [2022-11-21 17:24:04,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 359 transitions, 1242 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:24:04,010 INFO L231 Difference]: Finished difference. Result has 252 places, 282 transitions, 930 flow [2022-11-21 17:24:04,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=930, PETRI_PLACES=252, PETRI_TRANSITIONS=282} [2022-11-21 17:24:04,012 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 16 predicate places. [2022-11-21 17:24:04,012 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 282 transitions, 930 flow [2022-11-21 17:24:04,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 273.6666666666667) internal successors, (3284), 12 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:04,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:04,016 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:04,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:24:04,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-21 17:24:04,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2125129790, now seen corresponding path program 1 times [2022-11-21 17:24:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:04,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646856013] [2022-11-21 17:24:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:04,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:04,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:04,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646856013] [2022-11-21 17:24:04,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646856013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:04,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083525896] [2022-11-21 17:24:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:04,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:04,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:04,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:04,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:24:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:04,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:24:04,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:04,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:04,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083525896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:04,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:24:04,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:24:04,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779633655] [2022-11-21 17:24:04,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:04,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:24:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:24:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:24:04,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-21 17:24:04,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 282 transitions, 930 flow. Second operand has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:04,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:04,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-21 17:24:04,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:05,010 INFO L130 PetriNetUnfolder]: 41/763 cut-off events. [2022-11-21 17:24:05,011 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-21 17:24:05,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 763 events. 41/763 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2976 event pairs, 0 based on Foata normal form. 12/700 useless extension candidates. Maximal degree in co-relation 842. Up to 68 conditions per place. [2022-11-21 17:24:05,017 INFO L137 encePairwiseOnDemand]: 312/329 looper letters, 59 selfloop transitions, 43 changer transitions 0/290 dead transitions. [2022-11-21 17:24:05,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 290 transitions, 1105 flow [2022-11-21 17:24:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:24:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:24:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1969 transitions. [2022-11-21 17:24:05,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8549717759444203 [2022-11-21 17:24:05,022 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1969 transitions. [2022-11-21 17:24:05,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1969 transitions. [2022-11-21 17:24:05,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:05,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1969 transitions. [2022-11-21 17:24:05,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.2857142857143) internal successors, (1969), 7 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,034 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,034 INFO L175 Difference]: Start difference. First operand has 252 places, 282 transitions, 930 flow. Second operand 7 states and 1969 transitions. [2022-11-21 17:24:05,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 290 transitions, 1105 flow [2022-11-21 17:24:05,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 290 transitions, 989 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-21 17:24:05,048 INFO L231 Difference]: Finished difference. Result has 246 places, 270 transitions, 819 flow [2022-11-21 17:24:05,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=819, PETRI_PLACES=246, PETRI_TRANSITIONS=270} [2022-11-21 17:24:05,050 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 10 predicate places. [2022-11-21 17:24:05,050 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 270 transitions, 819 flow [2022-11-21 17:24:05,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:05,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:05,051 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:05,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 17:24:05,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:05,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:05,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1474687637, now seen corresponding path program 2 times [2022-11-21 17:24:05,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:05,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629021953] [2022-11-21 17:24:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:05,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:05,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629021953] [2022-11-21 17:24:05,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629021953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039856635] [2022-11-21 17:24:05,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:24:05,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:05,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:05,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:05,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:24:05,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:24:05,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:05,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:24:05,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 17:24:05,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 17:24:06,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039856635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:06,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:06,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 17:24:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120117128] [2022-11-21 17:24:06,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:24:06,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:06,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:24:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:24:06,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 329 [2022-11-21 17:24:06,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 270 transitions, 819 flow. Second operand has 18 states, 18 states have (on average 248.61111111111111) internal successors, (4475), 18 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:06,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:06,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 329 [2022-11-21 17:24:06,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:07,840 INFO L130 PetriNetUnfolder]: 225/1907 cut-off events. [2022-11-21 17:24:07,840 INFO L131 PetriNetUnfolder]: For 273/315 co-relation queries the response was YES. [2022-11-21 17:24:07,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 1907 events. 225/1907 cut-off events. For 273/315 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11844 event pairs, 84 based on Foata normal form. 6/1570 useless extension candidates. Maximal degree in co-relation 1686. Up to 71 conditions per place. [2022-11-21 17:24:07,858 INFO L137 encePairwiseOnDemand]: 301/329 looper letters, 178 selfloop transitions, 97 changer transitions 0/439 dead transitions. [2022-11-21 17:24:07,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 439 transitions, 1844 flow [2022-11-21 17:24:07,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 17:24:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-21 17:24:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12286 transitions. [2022-11-21 17:24:07,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7621115315427083 [2022-11-21 17:24:07,886 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12286 transitions. [2022-11-21 17:24:07,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12286 transitions. [2022-11-21 17:24:07,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:07,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12286 transitions. [2022-11-21 17:24:07,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 250.73469387755102) internal successors, (12286), 49 states have internal predecessors, (12286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:07,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 329.0) internal successors, (16450), 50 states have internal predecessors, (16450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:07,974 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 329.0) internal successors, (16450), 50 states have internal predecessors, (16450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:07,974 INFO L175 Difference]: Start difference. First operand has 246 places, 270 transitions, 819 flow. Second operand 49 states and 12286 transitions. [2022-11-21 17:24:07,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 439 transitions, 1844 flow [2022-11-21 17:24:07,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 439 transitions, 1775 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:24:07,985 INFO L231 Difference]: Finished difference. Result has 292 places, 310 transitions, 1162 flow [2022-11-21 17:24:07,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1162, PETRI_PLACES=292, PETRI_TRANSITIONS=310} [2022-11-21 17:24:07,988 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 56 predicate places. [2022-11-21 17:24:07,988 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 310 transitions, 1162 flow [2022-11-21 17:24:07,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 248.61111111111111) internal successors, (4475), 18 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:07,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:07,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:07,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:08,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:08,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:08,197 INFO L85 PathProgramCache]: Analyzing trace with hash -111854088, now seen corresponding path program 1 times [2022-11-21 17:24:08,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:08,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118108924] [2022-11-21 17:24:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:08,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:08,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:08,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118108924] [2022-11-21 17:24:08,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118108924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:08,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:08,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391527224] [2022-11-21 17:24:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:08,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:08,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:08,393 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-21 17:24:08,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 310 transitions, 1162 flow. Second operand has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:08,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-21 17:24:08,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:08,851 INFO L130 PetriNetUnfolder]: 372/1956 cut-off events. [2022-11-21 17:24:08,852 INFO L131 PetriNetUnfolder]: For 291/319 co-relation queries the response was YES. [2022-11-21 17:24:08,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 1956 events. 372/1956 cut-off events. For 291/319 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 13725 event pairs, 56 based on Foata normal form. 0/1718 useless extension candidates. Maximal degree in co-relation 3132. Up to 421 conditions per place. [2022-11-21 17:24:08,878 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 30 selfloop transitions, 4 changer transitions 0/327 dead transitions. [2022-11-21 17:24:08,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 327 transitions, 1275 flow [2022-11-21 17:24:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:24:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:24:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1491 transitions. [2022-11-21 17:24:08,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9063829787234042 [2022-11-21 17:24:08,882 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1491 transitions. [2022-11-21 17:24:08,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1491 transitions. [2022-11-21 17:24:08,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:08,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1491 transitions. [2022-11-21 17:24:08,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.2) internal successors, (1491), 5 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,890 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,890 INFO L175 Difference]: Start difference. First operand has 292 places, 310 transitions, 1162 flow. Second operand 5 states and 1491 transitions. [2022-11-21 17:24:08,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 327 transitions, 1275 flow [2022-11-21 17:24:08,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 327 transitions, 1152 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-21 17:24:08,900 INFO L231 Difference]: Finished difference. Result has 284 places, 313 transitions, 1069 flow [2022-11-21 17:24:08,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1069, PETRI_PLACES=284, PETRI_TRANSITIONS=313} [2022-11-21 17:24:08,901 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 48 predicate places. [2022-11-21 17:24:08,902 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 313 transitions, 1069 flow [2022-11-21 17:24:08,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:08,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:08,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:08,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:24:08,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash -597735967, now seen corresponding path program 1 times [2022-11-21 17:24:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:08,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038460771] [2022-11-21 17:24:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:09,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:09,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038460771] [2022-11-21 17:24:09,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038460771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:09,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:09,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:09,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033874916] [2022-11-21 17:24:09,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:09,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:09,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:09,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:09,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-21 17:24:09,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 313 transitions, 1069 flow. Second operand has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:09,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-21 17:24:09,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:09,690 INFO L130 PetriNetUnfolder]: 533/2502 cut-off events. [2022-11-21 17:24:09,691 INFO L131 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-11-21 17:24:09,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4130 conditions, 2502 events. 533/2502 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 20449 event pairs, 84 based on Foata normal form. 0/2082 useless extension candidates. Maximal degree in co-relation 3876. Up to 582 conditions per place. [2022-11-21 17:24:09,730 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 29 selfloop transitions, 4 changer transitions 0/329 dead transitions. [2022-11-21 17:24:09,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 329 transitions, 1177 flow [2022-11-21 17:24:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:24:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:24:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1490 transitions. [2022-11-21 17:24:09,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9057750759878419 [2022-11-21 17:24:09,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1490 transitions. [2022-11-21 17:24:09,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1490 transitions. [2022-11-21 17:24:09,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:09,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1490 transitions. [2022-11-21 17:24:09,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,743 INFO L175 Difference]: Start difference. First operand has 284 places, 313 transitions, 1069 flow. Second operand 5 states and 1490 transitions. [2022-11-21 17:24:09,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 329 transitions, 1177 flow [2022-11-21 17:24:09,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 329 transitions, 1175 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:24:09,752 INFO L231 Difference]: Finished difference. Result has 290 places, 316 transitions, 1097 flow [2022-11-21 17:24:09,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1097, PETRI_PLACES=290, PETRI_TRANSITIONS=316} [2022-11-21 17:24:09,756 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 54 predicate places. [2022-11-21 17:24:09,756 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 316 transitions, 1097 flow [2022-11-21 17:24:09,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:09,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:09,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:24:09,758 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:09,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1489725109, now seen corresponding path program 1 times [2022-11-21 17:24:09,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:09,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944833306] [2022-11-21 17:24:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:09,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 17:24:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:09,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944833306] [2022-11-21 17:24:09,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944833306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:09,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:09,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:24:09,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920811142] [2022-11-21 17:24:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:09,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:24:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:09,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:24:09,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:24:09,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-21 17:24:09,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 316 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 259.85714285714283) internal successors, (1819), 7 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:09,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:09,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-21 17:24:09,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:11,418 INFO L130 PetriNetUnfolder]: 841/5273 cut-off events. [2022-11-21 17:24:11,418 INFO L131 PetriNetUnfolder]: For 982/1073 co-relation queries the response was YES. [2022-11-21 17:24:11,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7939 conditions, 5273 events. 841/5273 cut-off events. For 982/1073 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 48524 event pairs, 252 based on Foata normal form. 0/4412 useless extension candidates. Maximal degree in co-relation 6983. Up to 557 conditions per place. [2022-11-21 17:24:11,502 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 181 selfloop transitions, 23 changer transitions 0/401 dead transitions. [2022-11-21 17:24:11,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 401 transitions, 1862 flow [2022-11-21 17:24:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:24:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:24:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2652 transitions. [2022-11-21 17:24:11,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8060790273556231 [2022-11-21 17:24:11,509 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2652 transitions. [2022-11-21 17:24:11,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2652 transitions. [2022-11-21 17:24:11,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:11,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2652 transitions. [2022-11-21 17:24:11,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 265.2) internal successors, (2652), 10 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,523 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,523 INFO L175 Difference]: Start difference. First operand has 290 places, 316 transitions, 1097 flow. Second operand 10 states and 2652 transitions. [2022-11-21 17:24:11,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 401 transitions, 1862 flow [2022-11-21 17:24:11,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 401 transitions, 1860 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:24:11,576 INFO L231 Difference]: Finished difference. Result has 300 places, 317 transitions, 1153 flow [2022-11-21 17:24:11,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1153, PETRI_PLACES=300, PETRI_TRANSITIONS=317} [2022-11-21 17:24:11,577 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 64 predicate places. [2022-11-21 17:24:11,577 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 317 transitions, 1153 flow [2022-11-21 17:24:11,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 259.85714285714283) internal successors, (1819), 7 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:11,578 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:11,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:24:11,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:11,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash 345801704, now seen corresponding path program 1 times [2022-11-21 17:24:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:11,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73558386] [2022-11-21 17:24:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:11,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:11,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73558386] [2022-11-21 17:24:11,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73558386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:11,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:11,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:11,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439203673] [2022-11-21 17:24:11,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:11,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:11,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:11,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:24:11,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-21 17:24:11,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 317 transitions, 1153 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:11,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:11,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-21 17:24:11,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:13,251 INFO L130 PetriNetUnfolder]: 1513/5924 cut-off events. [2022-11-21 17:24:13,251 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2022-11-21 17:24:13,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 5924 events. 1513/5924 cut-off events. For 1617/1617 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 60427 event pairs, 252 based on Foata normal form. 0/4727 useless extension candidates. Maximal degree in co-relation 8080. Up to 1618 conditions per place. [2022-11-21 17:24:13,323 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 28 selfloop transitions, 4 changer transitions 0/332 dead transitions. [2022-11-21 17:24:13,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 332 transitions, 1253 flow [2022-11-21 17:24:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:24:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:24:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1489 transitions. [2022-11-21 17:24:13,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9051671732522797 [2022-11-21 17:24:13,327 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1489 transitions. [2022-11-21 17:24:13,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1489 transitions. [2022-11-21 17:24:13,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:13,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1489 transitions. [2022-11-21 17:24:13,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.8) internal successors, (1489), 5 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:13,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:13,335 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:13,335 INFO L175 Difference]: Start difference. First operand has 300 places, 317 transitions, 1153 flow. Second operand 5 states and 1489 transitions. [2022-11-21 17:24:13,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 332 transitions, 1253 flow [2022-11-21 17:24:13,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 332 transitions, 1226 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:24:13,346 INFO L231 Difference]: Finished difference. Result has 302 places, 320 transitions, 1156 flow [2022-11-21 17:24:13,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1156, PETRI_PLACES=302, PETRI_TRANSITIONS=320} [2022-11-21 17:24:13,347 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 66 predicate places. [2022-11-21 17:24:13,347 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 320 transitions, 1156 flow [2022-11-21 17:24:13,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:13,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:13,348 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:13,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:24:13,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:13,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:13,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1373005362, now seen corresponding path program 1 times [2022-11-21 17:24:13,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:13,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266970525] [2022-11-21 17:24:13,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:13,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:13,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266970525] [2022-11-21 17:24:13,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266970525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:13,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505478236] [2022-11-21 17:24:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:13,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:13,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:13,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:24:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:13,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:24:13,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:14,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:14,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505478236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:14,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:14,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-21 17:24:14,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784042001] [2022-11-21 17:24:14,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:14,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:24:14,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:24:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:24:14,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-21 17:24:14,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 320 transitions, 1156 flow. Second operand has 32 states, 32 states have (on average 274.28125) internal successors, (8777), 32 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:14,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:14,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-21 17:24:14,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:17,112 INFO L130 PetriNetUnfolder]: 271/5146 cut-off events. [2022-11-21 17:24:17,112 INFO L131 PetriNetUnfolder]: For 1597/1597 co-relation queries the response was YES. [2022-11-21 17:24:17,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 5146 events. 271/5146 cut-off events. For 1597/1597 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 44036 event pairs, 0 based on Foata normal form. 32/4848 useless extension candidates. Maximal degree in co-relation 7159. Up to 155 conditions per place. [2022-11-21 17:24:17,168 INFO L137 encePairwiseOnDemand]: 310/329 looper letters, 308 selfloop transitions, 160 changer transitions 0/671 dead transitions. [2022-11-21 17:24:17,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 671 transitions, 3482 flow [2022-11-21 17:24:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 17:24:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-21 17:24:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 12408 transitions. [2022-11-21 17:24:17,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-21 17:24:17,184 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 12408 transitions. [2022-11-21 17:24:17,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 12408 transitions. [2022-11-21 17:24:17,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:17,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 12408 transitions. [2022-11-21 17:24:17,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 282.0) internal successors, (12408), 44 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 329.0) internal successors, (14805), 45 states have internal predecessors, (14805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,228 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 329.0) internal successors, (14805), 45 states have internal predecessors, (14805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,229 INFO L175 Difference]: Start difference. First operand has 302 places, 320 transitions, 1156 flow. Second operand 44 states and 12408 transitions. [2022-11-21 17:24:17,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 671 transitions, 3482 flow [2022-11-21 17:24:17,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 671 transitions, 3480 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:24:17,249 INFO L231 Difference]: Finished difference. Result has 353 places, 413 transitions, 2172 flow [2022-11-21 17:24:17,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2172, PETRI_PLACES=353, PETRI_TRANSITIONS=413} [2022-11-21 17:24:17,250 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-21 17:24:17,250 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 413 transitions, 2172 flow [2022-11-21 17:24:17,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 274.28125) internal successors, (8777), 32 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:17,253 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:17,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:17,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:17,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:17,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash -437552810, now seen corresponding path program 1 times [2022-11-21 17:24:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:17,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294902907] [2022-11-21 17:24:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:17,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 17:24:17,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:17,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294902907] [2022-11-21 17:24:17,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294902907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:17,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:17,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:24:17,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607450942] [2022-11-21 17:24:17,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:17,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:24:17,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:17,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:24:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:24:17,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-21 17:24:17,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 413 transitions, 2172 flow. Second operand has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:17,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-21 17:24:17,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:24,406 INFO L130 PetriNetUnfolder]: 5896/27860 cut-off events. [2022-11-21 17:24:24,406 INFO L131 PetriNetUnfolder]: For 7418/7673 co-relation queries the response was YES. [2022-11-21 17:24:24,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48823 conditions, 27860 events. 5896/27860 cut-off events. For 7418/7673 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 324472 event pairs, 2100 based on Foata normal form. 0/25190 useless extension candidates. Maximal degree in co-relation 47052. Up to 3931 conditions per place. [2022-11-21 17:24:24,950 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 218 selfloop transitions, 32 changer transitions 0/477 dead transitions. [2022-11-21 17:24:24,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 477 transitions, 3003 flow [2022-11-21 17:24:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:24:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:24:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2639 transitions. [2022-11-21 17:24:24,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021276595744681 [2022-11-21 17:24:24,958 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2639 transitions. [2022-11-21 17:24:24,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2639 transitions. [2022-11-21 17:24:24,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:24,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2639 transitions. [2022-11-21 17:24:24,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 263.9) internal successors, (2639), 10 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:24,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:24,973 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:24,973 INFO L175 Difference]: Start difference. First operand has 353 places, 413 transitions, 2172 flow. Second operand 10 states and 2639 transitions. [2022-11-21 17:24:24,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 477 transitions, 3003 flow [2022-11-21 17:24:25,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 477 transitions, 2880 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-21 17:24:25,089 INFO L231 Difference]: Finished difference. Result has 348 places, 414 transitions, 2141 flow [2022-11-21 17:24:25,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2141, PETRI_PLACES=348, PETRI_TRANSITIONS=414} [2022-11-21 17:24:25,091 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 112 predicate places. [2022-11-21 17:24:25,091 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 414 transitions, 2141 flow [2022-11-21 17:24:25,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:25,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:25,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:25,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:24:25,093 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:25,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:25,094 INFO L85 PathProgramCache]: Analyzing trace with hash -811293357, now seen corresponding path program 1 times [2022-11-21 17:24:25,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:25,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905164732] [2022-11-21 17:24:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:25,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 17:24:25,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:25,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905164732] [2022-11-21 17:24:25,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905164732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:25,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:25,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:24:25,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570864139] [2022-11-21 17:24:25,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:25,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:24:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:24:25,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:24:25,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-21 17:24:25,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 414 transitions, 2141 flow. Second operand has 7 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:25,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:25,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-21 17:24:25,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:30,037 INFO L130 PetriNetUnfolder]: 4411/21050 cut-off events. [2022-11-21 17:24:30,037 INFO L131 PetriNetUnfolder]: For 6701/6911 co-relation queries the response was YES. [2022-11-21 17:24:30,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37871 conditions, 21050 events. 4411/21050 cut-off events. For 6701/6911 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 235970 event pairs, 1710 based on Foata normal form. 75/19445 useless extension candidates. Maximal degree in co-relation 36098. Up to 3302 conditions per place. [2022-11-21 17:24:30,494 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 218 selfloop transitions, 32 changer transitions 0/477 dead transitions. [2022-11-21 17:24:30,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 477 transitions, 2950 flow [2022-11-21 17:24:30,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:24:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:24:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2639 transitions. [2022-11-21 17:24:30,498 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021276595744681 [2022-11-21 17:24:30,498 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2639 transitions. [2022-11-21 17:24:30,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2639 transitions. [2022-11-21 17:24:30,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:30,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2639 transitions. [2022-11-21 17:24:30,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 263.9) internal successors, (2639), 10 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:30,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:30,509 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:30,509 INFO L175 Difference]: Start difference. First operand has 348 places, 414 transitions, 2141 flow. Second operand 10 states and 2639 transitions. [2022-11-21 17:24:30,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 477 transitions, 2950 flow [2022-11-21 17:24:30,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 477 transitions, 2906 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:24:30,579 INFO L231 Difference]: Finished difference. Result has 353 places, 414 transitions, 2167 flow [2022-11-21 17:24:30,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2167, PETRI_PLACES=353, PETRI_TRANSITIONS=414} [2022-11-21 17:24:30,580 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-21 17:24:30,581 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 414 transitions, 2167 flow [2022-11-21 17:24:30,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:30,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:30,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:30,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:24:30,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:30,583 INFO L85 PathProgramCache]: Analyzing trace with hash 21152899, now seen corresponding path program 1 times [2022-11-21 17:24:30,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:30,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223075888] [2022-11-21 17:24:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:30,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-21 17:24:30,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:30,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223075888] [2022-11-21 17:24:30,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223075888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:30,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:30,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:24:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595223814] [2022-11-21 17:24:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:30,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:24:30,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:30,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:24:30,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:24:30,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-21 17:24:30,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 414 transitions, 2167 flow. Second operand has 7 states, 7 states have (on average 260.14285714285717) internal successors, (1821), 7 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:30,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:30,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-21 17:24:30,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:35,289 INFO L130 PetriNetUnfolder]: 3601/17990 cut-off events. [2022-11-21 17:24:35,289 INFO L131 PetriNetUnfolder]: For 8248/8473 co-relation queries the response was YES. [2022-11-21 17:24:35,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31109 conditions, 17990 events. 3601/17990 cut-off events. For 8248/8473 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 203320 event pairs, 1290 based on Foata normal form. 0/15950 useless extension candidates. Maximal degree in co-relation 28809. Up to 2971 conditions per place. [2022-11-21 17:24:35,751 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 277 selfloop transitions, 31 changer transitions 1/536 dead transitions. [2022-11-21 17:24:35,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 536 transitions, 3543 flow [2022-11-21 17:24:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:24:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:24:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2649 transitions. [2022-11-21 17:24:35,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8051671732522796 [2022-11-21 17:24:35,755 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2649 transitions. [2022-11-21 17:24:35,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2649 transitions. [2022-11-21 17:24:35,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:35,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2649 transitions. [2022-11-21 17:24:35,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 264.9) internal successors, (2649), 10 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:35,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:35,769 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:35,769 INFO L175 Difference]: Start difference. First operand has 353 places, 414 transitions, 2167 flow. Second operand 10 states and 2649 transitions. [2022-11-21 17:24:35,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 536 transitions, 3543 flow [2022-11-21 17:24:35,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 536 transitions, 3437 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 17:24:35,839 INFO L231 Difference]: Finished difference. Result has 354 places, 414 transitions, 2170 flow [2022-11-21 17:24:35,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2170, PETRI_PLACES=354, PETRI_TRANSITIONS=414} [2022-11-21 17:24:35,842 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 118 predicate places. [2022-11-21 17:24:35,842 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 414 transitions, 2170 flow [2022-11-21 17:24:35,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.14285714285717) internal successors, (1821), 7 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:35,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:35,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:24:35,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1981518659, now seen corresponding path program 1 times [2022-11-21 17:24:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:35,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429746830] [2022-11-21 17:24:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 17:24:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:36,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429746830] [2022-11-21 17:24:36,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429746830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:36,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:36,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:24:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069841078] [2022-11-21 17:24:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:36,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:24:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:24:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:24:36,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-21 17:24:36,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 414 transitions, 2170 flow. Second operand has 7 states, 7 states have (on average 260.57142857142856) internal successors, (1824), 7 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:36,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:36,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-21 17:24:36,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:24:43,440 INFO L130 PetriNetUnfolder]: 7499/32031 cut-off events. [2022-11-21 17:24:43,440 INFO L131 PetriNetUnfolder]: For 11688/11688 co-relation queries the response was YES. [2022-11-21 17:24:43,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54861 conditions, 32031 events. 7499/32031 cut-off events. For 11688/11688 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 393667 event pairs, 2693 based on Foata normal form. 21/28836 useless extension candidates. Maximal degree in co-relation 50817. Up to 5452 conditions per place. [2022-11-21 17:24:43,798 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 196 selfloop transitions, 10 changer transitions 0/433 dead transitions. [2022-11-21 17:24:43,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 433 transitions, 2636 flow [2022-11-21 17:24:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:24:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 17:24:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2117 transitions. [2022-11-21 17:24:43,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8043313069908815 [2022-11-21 17:24:43,802 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2117 transitions. [2022-11-21 17:24:43,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2117 transitions. [2022-11-21 17:24:43,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:24:43,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2117 transitions. [2022-11-21 17:24:43,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 264.625) internal successors, (2117), 8 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:43,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:43,812 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:43,812 INFO L175 Difference]: Start difference. First operand has 354 places, 414 transitions, 2170 flow. Second operand 8 states and 2117 transitions. [2022-11-21 17:24:43,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 433 transitions, 2636 flow [2022-11-21 17:24:43,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 433 transitions, 2574 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 17:24:44,007 INFO L231 Difference]: Finished difference. Result has 353 places, 414 transitions, 2131 flow [2022-11-21 17:24:44,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2131, PETRI_PLACES=353, PETRI_TRANSITIONS=414} [2022-11-21 17:24:44,010 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-21 17:24:44,011 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 414 transitions, 2131 flow [2022-11-21 17:24:44,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.57142857142856) internal successors, (1824), 7 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:44,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:24:44,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:44,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:24:44,012 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:24:44,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:44,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1519458832, now seen corresponding path program 1 times [2022-11-21 17:24:44,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:44,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792858272] [2022-11-21 17:24:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:44,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:24:44,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:44,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792858272] [2022-11-21 17:24:44,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792858272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:44,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298553881] [2022-11-21 17:24:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:44,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:44,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:44,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:44,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b708d-9db8-402e-a74d-871c4fd15824/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:24:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 17:24:44,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:24:45,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:24:45,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298553881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:45,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:45,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-21 17:24:45,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556584925] [2022-11-21 17:24:45,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:45,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 17:24:45,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:45,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 17:24:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-21 17:24:45,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 329 [2022-11-21 17:24:45,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 414 transitions, 2131 flow. Second operand has 28 states, 28 states have (on average 235.10714285714286) internal successors, (6583), 28 states have internal predecessors, (6583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:45,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:24:45,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 329 [2022-11-21 17:24:45,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand