./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:39:38,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:39:38,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:39:38,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:39:38,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:39:38,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:39:38,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:39:38,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:39:38,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:39:38,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:39:38,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:39:38,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:39:38,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:39:38,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:39:38,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:39:38,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:39:38,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:39:38,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:39:38,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:39:38,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:39:38,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:39:38,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:39:38,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:39:38,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:39:38,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:39:38,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:39:38,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:39:38,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:39:38,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:39:38,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:39:38,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:39:38,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:39:38,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:39:38,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:39:38,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:39:38,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:39:38,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:39:38,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:39:38,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:39:38,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:39:38,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:39:38,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:39:38,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:39:38,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:39:38,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:39:38,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:39:38,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:39:38,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:39:38,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:39:38,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:39:38,211 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:39:38,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:39:38,211 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:39:38,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:39:38,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:39:38,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:39:38,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:39:38,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:39:38,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:39:38,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:39:38,213 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:39:38,213 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:39:38,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:39:38,213 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:39:38,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:39:38,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:39:38,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:39:38,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:39:38,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:38,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:39:38,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:39:38,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:39:38,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:39:38,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:39:38,216 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:39:38,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:39:38,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:39:38,216 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_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-11-18 20:39:38,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:39:38,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:39:38,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:39:38,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:39:38,490 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:39:38,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-18 20:39:38,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/data/13310fca5/5f232b8a01614e29a08937216e575e9b/FLAGbe02f89d3 [2022-11-18 20:39:39,102 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:39:39,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-18 20:39:39,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/data/13310fca5/5f232b8a01614e29a08937216e575e9b/FLAGbe02f89d3 [2022-11-18 20:39:39,457 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/data/13310fca5/5f232b8a01614e29a08937216e575e9b [2022-11-18 20:39:39,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:39:39,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:39:39,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:39,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:39:39,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:39:39,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe22a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39, skipping insertion in model container [2022-11-18 20:39:39,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:39:39,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:39:39,745 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-18 20:39:39,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:39,761 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:39:39,799 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-18 20:39:39,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:39,818 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:39:39,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39 WrapperNode [2022-11-18 20:39:39,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:39,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:39,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:39:39,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:39:39,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,876 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 478 [2022-11-18 20:39:39,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:39,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:39:39,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:39:39,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:39:39,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:39:39,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:39:39,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:39:39,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:39:39,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (1/1) ... [2022-11-18 20:39:39,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:39,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:40,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:39:40,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:39:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:39:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:39:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:39:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:39:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:39:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:39:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:39:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:39:40,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:39:40,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:39:40,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:39:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:39:40,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:39:40,054 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:39:40,249 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:39:40,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:39:41,251 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:39:41,265 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:39:41,266 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 20:39:41,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:41 BoogieIcfgContainer [2022-11-18 20:39:41,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:39:41,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:39:41,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:39:41,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:39:41,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:39:39" (1/3) ... [2022-11-18 20:39:41,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e753e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:41, skipping insertion in model container [2022-11-18 20:39:41,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:39" (2/3) ... [2022-11-18 20:39:41,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e753e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:41, skipping insertion in model container [2022-11-18 20:39:41,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:41" (3/3) ... [2022-11-18 20:39:41,278 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-11-18 20:39:41,287 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:39:41,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:39:41,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-18 20:39:41,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:39:41,481 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:39:41,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 605 places, 659 transitions, 1334 flow [2022-11-18 20:39:41,805 INFO L130 PetriNetUnfolder]: 61/657 cut-off events. [2022-11-18 20:39:41,806 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:39:41,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 657 events. 61/657 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2386 event pairs, 0 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-11-18 20:39:41,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 605 places, 659 transitions, 1334 flow [2022-11-18 20:39:41,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 586 places, 639 transitions, 1290 flow [2022-11-18 20:39:41,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:39:41,922 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;@60aa1979, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:39:41,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-18 20:39:41,941 INFO L130 PetriNetUnfolder]: 3/94 cut-off events. [2022-11-18 20:39:41,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:39:41,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:41,943 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] [2022-11-18 20:39:41,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:41,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2103476083, now seen corresponding path program 1 times [2022-11-18 20:39:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:41,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115821063] [2022-11-18 20:39:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:41,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:42,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:42,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115821063] [2022-11-18 20:39:42,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115821063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:42,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:42,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:39:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519337467] [2022-11-18 20:39:42,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:42,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:39:42,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:39:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:39:42,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-18 20:39:42,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 639 transitions, 1290 flow. Second operand has 4 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:42,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:42,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-18 20:39:42,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:43,190 INFO L130 PetriNetUnfolder]: 71/1120 cut-off events. [2022-11-18 20:39:43,190 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-18 20:39:43,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 1120 events. 71/1120 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6226 event pairs, 0 based on Foata normal form. 54/990 useless extension candidates. Maximal degree in co-relation 691. Up to 30 conditions per place. [2022-11-18 20:39:43,236 INFO L137 encePairwiseOnDemand]: 620/659 looper letters, 38 selfloop transitions, 9 changer transitions 8/634 dead transitions. [2022-11-18 20:39:43,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 634 transitions, 1390 flow [2022-11-18 20:39:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:39:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:39:43,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3116 transitions. [2022-11-18 20:39:43,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456752655538695 [2022-11-18 20:39:43,274 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3116 transitions. [2022-11-18 20:39:43,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3116 transitions. [2022-11-18 20:39:43,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:43,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3116 transitions. [2022-11-18 20:39:43,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,319 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,321 INFO L175 Difference]: Start difference. First operand has 586 places, 639 transitions, 1290 flow. Second operand 5 states and 3116 transitions. [2022-11-18 20:39:43,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 634 transitions, 1390 flow [2022-11-18 20:39:43,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 634 transitions, 1374 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:39:43,352 INFO L231 Difference]: Finished difference. Result has 587 places, 613 transitions, 1282 flow [2022-11-18 20:39:43,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=587, PETRI_TRANSITIONS=613} [2022-11-18 20:39:43,362 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 1 predicate places. [2022-11-18 20:39:43,363 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 613 transitions, 1282 flow [2022-11-18 20:39:43,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:43,366 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:43,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:39:43,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:43,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1350065717, now seen corresponding path program 1 times [2022-11-18 20:39:43,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:43,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321439709] [2022-11-18 20:39:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:43,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:43,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321439709] [2022-11-18 20:39:43,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321439709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:43,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341491134] [2022-11-18 20:39:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:43,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:43,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:43,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:43,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:39:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:39:43,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:43,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:43,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341491134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:43,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:43,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:39:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296031842] [2022-11-18 20:39:43,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:43,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:39:43,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:39:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:39:43,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-18 20:39:43,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 613 transitions, 1282 flow. Second operand has 12 states, 12 states have (on average 605.6666666666666) internal successors, (7268), 12 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:43,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:43,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-18 20:39:43,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:45,247 INFO L130 PetriNetUnfolder]: 176/2626 cut-off events. [2022-11-18 20:39:45,247 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-18 20:39:45,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 2626 events. 176/2626 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20230 event pairs, 0 based on Foata normal form. 6/2192 useless extension candidates. Maximal degree in co-relation 2020. Up to 22 conditions per place. [2022-11-18 20:39:45,336 INFO L137 encePairwiseOnDemand]: 644/659 looper letters, 71 selfloop transitions, 40 changer transitions 0/690 dead transitions. [2022-11-18 20:39:45,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 690 transitions, 1720 flow [2022-11-18 20:39:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:39:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:39:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 10971 transitions. [2022-11-18 20:39:45,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.924886191198786 [2022-11-18 20:39:45,356 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 10971 transitions. [2022-11-18 20:39:45,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 10971 transitions. [2022-11-18 20:39:45,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:45,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 10971 transitions. [2022-11-18 20:39:45,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 609.5) internal successors, (10971), 18 states have internal predecessors, (10971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:45,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 659.0) internal successors, (12521), 19 states have internal predecessors, (12521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:45,428 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 659.0) internal successors, (12521), 19 states have internal predecessors, (12521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:45,429 INFO L175 Difference]: Start difference. First operand has 587 places, 613 transitions, 1282 flow. Second operand 18 states and 10971 transitions. [2022-11-18 20:39:45,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 690 transitions, 1720 flow [2022-11-18 20:39:45,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 690 transitions, 1715 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:39:45,444 INFO L231 Difference]: Finished difference. Result has 600 places, 640 transitions, 1515 flow [2022-11-18 20:39:45,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1515, PETRI_PLACES=600, PETRI_TRANSITIONS=640} [2022-11-18 20:39:45,446 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 14 predicate places. [2022-11-18 20:39:45,447 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 640 transitions, 1515 flow [2022-11-18 20:39:45,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 605.6666666666666) internal successors, (7268), 12 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:45,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:45,452 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:45,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:45,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:45,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1097634609, now seen corresponding path program 1 times [2022-11-18 20:39:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:45,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928547620] [2022-11-18 20:39:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:45,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:45,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928547620] [2022-11-18 20:39:45,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928547620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:45,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127915905] [2022-11-18 20:39:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:45,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:45,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:45,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:45,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:39:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:46,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:39:46,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:46,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:39:46,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127915905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:46,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:39:46,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:39:46,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294094008] [2022-11-18 20:39:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:46,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:46,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:46,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:39:46,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-18 20:39:46,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 640 transitions, 1515 flow. Second operand has 6 states, 6 states have (on average 605.3333333333334) internal successors, (3632), 6 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:46,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:46,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-18 20:39:46,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:47,185 INFO L130 PetriNetUnfolder]: 176/2618 cut-off events. [2022-11-18 20:39:47,185 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-18 20:39:47,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 2618 events. 176/2618 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20154 event pairs, 0 based on Foata normal form. 8/2186 useless extension candidates. Maximal degree in co-relation 2249. Up to 44 conditions per place. [2022-11-18 20:39:47,256 INFO L137 encePairwiseOnDemand]: 648/659 looper letters, 39 selfloop transitions, 27 changer transitions 0/645 dead transitions. [2022-11-18 20:39:47,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 645 transitions, 1626 flow [2022-11-18 20:39:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:39:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4268 transitions. [2022-11-18 20:39:47,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9252113592022545 [2022-11-18 20:39:47,266 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4268 transitions. [2022-11-18 20:39:47,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4268 transitions. [2022-11-18 20:39:47,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:47,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4268 transitions. [2022-11-18 20:39:47,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 609.7142857142857) internal successors, (4268), 7 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:47,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:47,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:47,287 INFO L175 Difference]: Start difference. First operand has 600 places, 640 transitions, 1515 flow. Second operand 7 states and 4268 transitions. [2022-11-18 20:39:47,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 645 transitions, 1626 flow [2022-11-18 20:39:47,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 645 transitions, 1552 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-18 20:39:47,305 INFO L231 Difference]: Finished difference. Result has 595 places, 632 transitions, 1441 flow [2022-11-18 20:39:47,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1441, PETRI_PLACES=595, PETRI_TRANSITIONS=632} [2022-11-18 20:39:47,309 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 9 predicate places. [2022-11-18 20:39:47,309 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 632 transitions, 1441 flow [2022-11-18 20:39:47,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 605.3333333333334) internal successors, (3632), 6 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:47,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:47,311 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:47,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:47,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:47,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:47,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash -763580805, now seen corresponding path program 2 times [2022-11-18 20:39:47,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:47,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184764932] [2022-11-18 20:39:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:47,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:47,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184764932] [2022-11-18 20:39:47,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184764932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:47,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284185369] [2022-11-18 20:39:47,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:39:47,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:47,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:47,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:47,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:39:47,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:39:47,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:47,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:39:48,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 20:39:48,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 20:39:48,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284185369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:48,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:48,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-18 20:39:48,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460902937] [2022-11-18 20:39:48,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:48,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:39:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:39:48,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:39:48,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-18 20:39:48,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 632 transitions, 1441 flow. Second operand has 18 states, 18 states have (on average 598.8333333333334) internal successors, (10779), 18 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:48,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:48,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-18 20:39:48,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:49,909 INFO L130 PetriNetUnfolder]: 211/3108 cut-off events. [2022-11-18 20:39:49,910 INFO L131 PetriNetUnfolder]: For 114/120 co-relation queries the response was YES. [2022-11-18 20:39:49,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 3108 events. 211/3108 cut-off events. For 114/120 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 25045 event pairs, 0 based on Foata normal form. 2/2582 useless extension candidates. Maximal degree in co-relation 2514. Up to 14 conditions per place. [2022-11-18 20:39:50,016 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 81 selfloop transitions, 43 changer transitions 0/695 dead transitions. [2022-11-18 20:39:50,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 695 transitions, 1840 flow [2022-11-18 20:39:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:39:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:39:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12026 transitions. [2022-11-18 20:39:50,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9124430955993931 [2022-11-18 20:39:50,040 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12026 transitions. [2022-11-18 20:39:50,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12026 transitions. [2022-11-18 20:39:50,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:50,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12026 transitions. [2022-11-18 20:39:50,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 601.3) internal successors, (12026), 20 states have internal predecessors, (12026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:50,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:50,104 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:50,105 INFO L175 Difference]: Start difference. First operand has 595 places, 632 transitions, 1441 flow. Second operand 20 states and 12026 transitions. [2022-11-18 20:39:50,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 695 transitions, 1840 flow [2022-11-18 20:39:50,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 695 transitions, 1787 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:39:50,122 INFO L231 Difference]: Finished difference. Result has 604 places, 635 transitions, 1487 flow [2022-11-18 20:39:50,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1487, PETRI_PLACES=604, PETRI_TRANSITIONS=635} [2022-11-18 20:39:50,124 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 18 predicate places. [2022-11-18 20:39:50,124 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 635 transitions, 1487 flow [2022-11-18 20:39:50,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 598.8333333333334) internal successors, (10779), 18 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:50,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:50,129 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] [2022-11-18 20:39:50,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:50,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:50,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:50,336 INFO L85 PathProgramCache]: Analyzing trace with hash -30316929, now seen corresponding path program 1 times [2022-11-18 20:39:50,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:50,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148948946] [2022-11-18 20:39:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:50,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:50,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:50,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148948946] [2022-11-18 20:39:50,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148948946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:50,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:50,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:39:50,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709764785] [2022-11-18 20:39:50,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:50,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:39:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:39:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:39:50,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 605 out of 659 [2022-11-18 20:39:50,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 635 transitions, 1487 flow. Second operand has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:50,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:50,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 605 of 659 [2022-11-18 20:39:50,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:51,478 INFO L130 PetriNetUnfolder]: 176/2620 cut-off events. [2022-11-18 20:39:51,479 INFO L131 PetriNetUnfolder]: For 148/153 co-relation queries the response was YES. [2022-11-18 20:39:51,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2838 conditions, 2620 events. 176/2620 cut-off events. For 148/153 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20022 event pairs, 0 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 503. Up to 72 conditions per place. [2022-11-18 20:39:51,541 INFO L137 encePairwiseOnDemand]: 649/659 looper letters, 39 selfloop transitions, 12 changer transitions 0/638 dead transitions. [2022-11-18 20:39:51,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 638 transitions, 1594 flow [2022-11-18 20:39:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:39:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:39:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3060 transitions. [2022-11-18 20:39:51,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.928679817905918 [2022-11-18 20:39:51,551 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3060 transitions. [2022-11-18 20:39:51,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3060 transitions. [2022-11-18 20:39:51,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:51,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3060 transitions. [2022-11-18 20:39:51,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:51,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:51,658 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:51,658 INFO L175 Difference]: Start difference. First operand has 604 places, 635 transitions, 1487 flow. Second operand 5 states and 3060 transitions. [2022-11-18 20:39:51,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 638 transitions, 1594 flow [2022-11-18 20:39:51,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 638 transitions, 1503 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-18 20:39:51,678 INFO L231 Difference]: Finished difference. Result has 594 places, 634 transitions, 1421 flow [2022-11-18 20:39:51,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1421, PETRI_PLACES=594, PETRI_TRANSITIONS=634} [2022-11-18 20:39:51,681 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 8 predicate places. [2022-11-18 20:39:51,681 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 634 transitions, 1421 flow [2022-11-18 20:39:51,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:51,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:51,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:51,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:39:51,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1243862927, now seen corresponding path program 1 times [2022-11-18 20:39:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:51,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35900174] [2022-11-18 20:39:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:51,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:51,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35900174] [2022-11-18 20:39:51,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35900174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:51,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426006666] [2022-11-18 20:39:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:51,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:51,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:51,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:51,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:39:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:52,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:39:52,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:52,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:52,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426006666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:52,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:52,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:39:52,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426617897] [2022-11-18 20:39:52,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:52,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:39:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:52,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:39:52,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:39:52,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-18 20:39:52,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 634 transitions, 1421 flow. Second operand has 15 states, 15 states have (on average 598.4666666666667) internal successors, (8977), 15 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:52,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-18 20:39:52,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:53,515 INFO L130 PetriNetUnfolder]: 106/1644 cut-off events. [2022-11-18 20:39:53,515 INFO L131 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2022-11-18 20:39:53,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 1644 events. 106/1644 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10461 event pairs, 0 based on Foata normal form. 4/1390 useless extension candidates. Maximal degree in co-relation 1547. Up to 36 conditions per place. [2022-11-18 20:39:53,561 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 49 selfloop transitions, 30 changer transitions 0/650 dead transitions. [2022-11-18 20:39:53,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 650 transitions, 1621 flow [2022-11-18 20:39:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:39:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:39:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6610 transitions. [2022-11-18 20:39:53,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9118499103324597 [2022-11-18 20:39:53,578 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 6610 transitions. [2022-11-18 20:39:53,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 6610 transitions. [2022-11-18 20:39:53,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:53,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 6610 transitions. [2022-11-18 20:39:53,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 600.9090909090909) internal successors, (6610), 11 states have internal predecessors, (6610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:53,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 659.0) internal successors, (7908), 12 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:53,615 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 659.0) internal successors, (7908), 12 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:53,615 INFO L175 Difference]: Start difference. First operand has 594 places, 634 transitions, 1421 flow. Second operand 11 states and 6610 transitions. [2022-11-18 20:39:53,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 650 transitions, 1621 flow [2022-11-18 20:39:53,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 650 transitions, 1601 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:39:53,630 INFO L231 Difference]: Finished difference. Result has 603 places, 634 transitions, 1500 flow [2022-11-18 20:39:53,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1500, PETRI_PLACES=603, PETRI_TRANSITIONS=634} [2022-11-18 20:39:53,633 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 17 predicate places. [2022-11-18 20:39:53,633 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 634 transitions, 1500 flow [2022-11-18 20:39:53,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 598.4666666666667) internal successors, (8977), 15 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:53,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:53,637 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:53,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:53,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:39:53,844 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash -872660395, now seen corresponding path program 2 times [2022-11-18 20:39:53,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:53,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735563732] [2022-11-18 20:39:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:53,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:39:54,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:54,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735563732] [2022-11-18 20:39:54,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735563732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:54,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984816401] [2022-11-18 20:39:54,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:39:54,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:54,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:54,272 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:54,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:39:54,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:39:54,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:54,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:39:54,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:39:54,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:39:54,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984816401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:54,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:39:54,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-18 20:39:54,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847096177] [2022-11-18 20:39:54,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:54,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:54,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:54,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:39:54,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:39:54,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 634 transitions, 1500 flow. Second operand has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:54,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:54,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:39:54,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:56,146 INFO L130 PetriNetUnfolder]: 532/4842 cut-off events. [2022-11-18 20:39:56,146 INFO L131 PetriNetUnfolder]: For 106/109 co-relation queries the response was YES. [2022-11-18 20:39:56,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5816 conditions, 4842 events. 532/4842 cut-off events. For 106/109 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 48355 event pairs, 87 based on Foata normal form. 0/4035 useless extension candidates. Maximal degree in co-relation 1833. Up to 252 conditions per place. [2022-11-18 20:39:56,220 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 54 selfloop transitions, 7 changer transitions 0/646 dead transitions. [2022-11-18 20:39:56,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 646 transitions, 1651 flow [2022-11-18 20:39:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:39:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4129 transitions. [2022-11-18 20:39:56,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8950791242141773 [2022-11-18 20:39:56,230 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4129 transitions. [2022-11-18 20:39:56,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4129 transitions. [2022-11-18 20:39:56,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:56,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4129 transitions. [2022-11-18 20:39:56,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.8571428571429) internal successors, (4129), 7 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:56,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:56,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:56,247 INFO L175 Difference]: Start difference. First operand has 603 places, 634 transitions, 1500 flow. Second operand 7 states and 4129 transitions. [2022-11-18 20:39:56,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 646 transitions, 1651 flow [2022-11-18 20:39:56,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 646 transitions, 1604 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-18 20:39:56,260 INFO L231 Difference]: Finished difference. Result has 599 places, 633 transitions, 1465 flow [2022-11-18 20:39:56,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1465, PETRI_PLACES=599, PETRI_TRANSITIONS=633} [2022-11-18 20:39:56,262 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 13 predicate places. [2022-11-18 20:39:56,262 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 633 transitions, 1465 flow [2022-11-18 20:39:56,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:56,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:56,264 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:56,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:56,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:39:56,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1282666791, now seen corresponding path program 1 times [2022-11-18 20:39:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:56,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243332309] [2022-11-18 20:39:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:56,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:39:56,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:56,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243332309] [2022-11-18 20:39:56,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243332309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:56,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:56,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:39:56,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650187999] [2022-11-18 20:39:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:56,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:39:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:39:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:39:56,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:39:56,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 633 transitions, 1465 flow. Second operand has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:56,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:56,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:39:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:58,077 INFO L130 PetriNetUnfolder]: 505/5493 cut-off events. [2022-11-18 20:39:58,078 INFO L131 PetriNetUnfolder]: For 91/94 co-relation queries the response was YES. [2022-11-18 20:39:58,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 5493 events. 505/5493 cut-off events. For 91/94 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 56035 event pairs, 90 based on Foata normal form. 12/4611 useless extension candidates. Maximal degree in co-relation 3716. Up to 295 conditions per place. [2022-11-18 20:39:58,165 INFO L137 encePairwiseOnDemand]: 647/659 looper letters, 59 selfloop transitions, 8 changer transitions 0/652 dead transitions. [2022-11-18 20:39:58,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 652 transitions, 1638 flow [2022-11-18 20:39:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:39:58,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:39:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2395 transitions. [2022-11-18 20:39:58,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9085735963581184 [2022-11-18 20:39:58,171 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2395 transitions. [2022-11-18 20:39:58,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2395 transitions. [2022-11-18 20:39:58,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:58,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2395 transitions. [2022-11-18 20:39:58,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 598.75) internal successors, (2395), 4 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,182 INFO L175 Difference]: Start difference. First operand has 599 places, 633 transitions, 1465 flow. Second operand 4 states and 2395 transitions. [2022-11-18 20:39:58,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 652 transitions, 1638 flow [2022-11-18 20:39:58,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 652 transitions, 1628 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:39:58,195 INFO L231 Difference]: Finished difference. Result has 599 places, 635 transitions, 1501 flow [2022-11-18 20:39:58,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1501, PETRI_PLACES=599, PETRI_TRANSITIONS=635} [2022-11-18 20:39:58,199 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 13 predicate places. [2022-11-18 20:39:58,199 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 635 transitions, 1501 flow [2022-11-18 20:39:58,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:58,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:58,201 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:58,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:39:58,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash 305640406, now seen corresponding path program 1 times [2022-11-18 20:39:58,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:58,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452448980] [2022-11-18 20:39:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:58,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:39:58,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:58,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452448980] [2022-11-18 20:39:58,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452448980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:58,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734098860] [2022-11-18 20:39:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:58,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:58,506 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:58,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:39:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:58,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:39:58,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:39:58,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:39:59,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734098860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:59,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:59,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 20:39:59,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786508817] [2022-11-18 20:39:59,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:59,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:39:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:39:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:39:59,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-18 20:39:59,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 635 transitions, 1501 flow. Second operand has 22 states, 22 states have (on average 598.6818181818181) internal successors, (13171), 22 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:59,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-18 20:39:59,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:59,657 INFO L130 PetriNetUnfolder]: 34/776 cut-off events. [2022-11-18 20:39:59,658 INFO L131 PetriNetUnfolder]: For 80/85 co-relation queries the response was YES. [2022-11-18 20:39:59,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 776 events. 34/776 cut-off events. For 80/85 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3097 event pairs, 0 based on Foata normal form. 4/688 useless extension candidates. Maximal degree in co-relation 859. Up to 20 conditions per place. [2022-11-18 20:39:59,680 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 55 selfloop transitions, 34 changer transitions 0/661 dead transitions. [2022-11-18 20:39:59,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 661 transitions, 1753 flow [2022-11-18 20:39:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:39:59,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:39:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 10208 transitions. [2022-11-18 20:39:59,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.911184504150674 [2022-11-18 20:39:59,700 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 10208 transitions. [2022-11-18 20:39:59,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 10208 transitions. [2022-11-18 20:39:59,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:59,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 10208 transitions. [2022-11-18 20:39:59,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 600.4705882352941) internal successors, (10208), 17 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 659.0) internal successors, (11862), 18 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,738 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 659.0) internal successors, (11862), 18 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,738 INFO L175 Difference]: Start difference. First operand has 599 places, 635 transitions, 1501 flow. Second operand 17 states and 10208 transitions. [2022-11-18 20:39:59,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 661 transitions, 1753 flow [2022-11-18 20:39:59,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 661 transitions, 1753 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:39:59,751 INFO L231 Difference]: Finished difference. Result has 617 places, 633 transitions, 1575 flow [2022-11-18 20:39:59,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1575, PETRI_PLACES=617, PETRI_TRANSITIONS=633} [2022-11-18 20:39:59,752 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 31 predicate places. [2022-11-18 20:39:59,753 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 633 transitions, 1575 flow [2022-11-18 20:39:59,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 598.6818181818181) internal successors, (13171), 22 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:59,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:59,757 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:59,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:59,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:59,973 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:39:59,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:59,974 INFO L85 PathProgramCache]: Analyzing trace with hash -556229958, now seen corresponding path program 2 times [2022-11-18 20:39:59,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:59,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470308697] [2022-11-18 20:39:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:00,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:00,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470308697] [2022-11-18 20:40:00,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470308697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:00,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:00,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:00,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129569024] [2022-11-18 20:40:00,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:00,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:00,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:00,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:00,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:00,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:00,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 633 transitions, 1575 flow. Second operand has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:00,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:00,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:00,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:00,931 INFO L130 PetriNetUnfolder]: 309/1940 cut-off events. [2022-11-18 20:40:00,931 INFO L131 PetriNetUnfolder]: For 316/321 co-relation queries the response was YES. [2022-11-18 20:40:00,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1940 events. 309/1940 cut-off events. For 316/321 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16553 event pairs, 85 based on Foata normal form. 0/1558 useless extension candidates. Maximal degree in co-relation 2351. Up to 210 conditions per place. [2022-11-18 20:40:00,965 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 7 changer transitions 0/643 dead transitions. [2022-11-18 20:40:00,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 643 transitions, 1716 flow [2022-11-18 20:40:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4127 transitions. [2022-11-18 20:40:00,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946455668762194 [2022-11-18 20:40:00,979 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4127 transitions. [2022-11-18 20:40:00,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4127 transitions. [2022-11-18 20:40:00,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:00,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4127 transitions. [2022-11-18 20:40:01,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.5714285714286) internal successors, (4127), 7 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,014 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,014 INFO L175 Difference]: Start difference. First operand has 617 places, 633 transitions, 1575 flow. Second operand 7 states and 4127 transitions. [2022-11-18 20:40:01,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 643 transitions, 1716 flow [2022-11-18 20:40:01,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 643 transitions, 1648 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-18 20:40:01,030 INFO L231 Difference]: Finished difference. Result has 606 places, 632 transitions, 1519 flow [2022-11-18 20:40:01,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1519, PETRI_PLACES=606, PETRI_TRANSITIONS=632} [2022-11-18 20:40:01,033 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 20 predicate places. [2022-11-18 20:40:01,033 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 632 transitions, 1519 flow [2022-11-18 20:40:01,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:01,035 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:01,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:40:01,035 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash -63257599, now seen corresponding path program 1 times [2022-11-18 20:40:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:01,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203982811] [2022-11-18 20:40:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:01,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:01,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203982811] [2022-11-18 20:40:01,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203982811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:01,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:01,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:01,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231191082] [2022-11-18 20:40:01,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:01,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:01,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:40:01,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:01,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 632 transitions, 1519 flow. Second operand has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:01,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:01,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:01,949 INFO L130 PetriNetUnfolder]: 362/2138 cut-off events. [2022-11-18 20:40:01,949 INFO L131 PetriNetUnfolder]: For 403/408 co-relation queries the response was YES. [2022-11-18 20:40:01,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 2138 events. 362/2138 cut-off events. For 403/408 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 19618 event pairs, 150 based on Foata normal form. 12/1659 useless extension candidates. Maximal degree in co-relation 2714. Up to 344 conditions per place. [2022-11-18 20:40:01,976 INFO L137 encePairwiseOnDemand]: 647/659 looper letters, 58 selfloop transitions, 8 changer transitions 0/650 dead transitions. [2022-11-18 20:40:01,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 650 transitions, 1687 flow [2022-11-18 20:40:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:40:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:40:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2394 transitions. [2022-11-18 20:40:01,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081942336874052 [2022-11-18 20:40:01,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2394 transitions. [2022-11-18 20:40:01,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2394 transitions. [2022-11-18 20:40:01,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:01,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2394 transitions. [2022-11-18 20:40:01,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 598.5) internal successors, (2394), 4 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:01,994 INFO L175 Difference]: Start difference. First operand has 606 places, 632 transitions, 1519 flow. Second operand 4 states and 2394 transitions. [2022-11-18 20:40:01,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 650 transitions, 1687 flow [2022-11-18 20:40:02,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 650 transitions, 1677 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:02,011 INFO L231 Difference]: Finished difference. Result has 606 places, 634 transitions, 1555 flow [2022-11-18 20:40:02,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1555, PETRI_PLACES=606, PETRI_TRANSITIONS=634} [2022-11-18 20:40:02,013 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 20 predicate places. [2022-11-18 20:40:02,013 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 634 transitions, 1555 flow [2022-11-18 20:40:02,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:02,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:02,015 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:02,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:40:02,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:02,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:02,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1584135510, now seen corresponding path program 1 times [2022-11-18 20:40:02,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:02,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916455450] [2022-11-18 20:40:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:02,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:02,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916455450] [2022-11-18 20:40:02,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916455450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:02,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:02,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:02,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985164461] [2022-11-18 20:40:02,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:40:02,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:02,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 634 transitions, 1555 flow. Second operand has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:02,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:02,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:02,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:02,901 INFO L130 PetriNetUnfolder]: 153/2434 cut-off events. [2022-11-18 20:40:02,901 INFO L131 PetriNetUnfolder]: For 139/140 co-relation queries the response was YES. [2022-11-18 20:40:02,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 2434 events. 153/2434 cut-off events. For 139/140 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 19421 event pairs, 24 based on Foata normal form. 4/2116 useless extension candidates. Maximal degree in co-relation 2677. Up to 95 conditions per place. [2022-11-18 20:40:02,941 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 59 selfloop transitions, 6 changer transitions 0/649 dead transitions. [2022-11-18 20:40:02,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 649 transitions, 1710 flow [2022-11-18 20:40:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:40:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:40:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2391 transitions. [2022-11-18 20:40:02,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070561456752656 [2022-11-18 20:40:02,945 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2391 transitions. [2022-11-18 20:40:02,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2391 transitions. [2022-11-18 20:40:02,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:02,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2391 transitions. [2022-11-18 20:40:02,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 597.75) internal successors, (2391), 4 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:02,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:02,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:02,955 INFO L175 Difference]: Start difference. First operand has 606 places, 634 transitions, 1555 flow. Second operand 4 states and 2391 transitions. [2022-11-18 20:40:02,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 649 transitions, 1710 flow [2022-11-18 20:40:02,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 649 transitions, 1706 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:02,972 INFO L231 Difference]: Finished difference. Result has 608 places, 632 transitions, 1551 flow [2022-11-18 20:40:02,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1551, PETRI_PLACES=608, PETRI_TRANSITIONS=632} [2022-11-18 20:40:02,974 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 22 predicate places. [2022-11-18 20:40:02,974 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 632 transitions, 1551 flow [2022-11-18 20:40:02,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:02,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:02,975 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:02,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:40:02,976 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash 305374408, now seen corresponding path program 1 times [2022-11-18 20:40:02,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:02,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320480894] [2022-11-18 20:40:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:02,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:03,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320480894] [2022-11-18 20:40:03,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320480894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:03,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:03,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283548468] [2022-11-18 20:40:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:03,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:03,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:03,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:03,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 632 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:03,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:03,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:03,884 INFO L130 PetriNetUnfolder]: 196/2450 cut-off events. [2022-11-18 20:40:03,884 INFO L131 PetriNetUnfolder]: For 125/126 co-relation queries the response was YES. [2022-11-18 20:40:03,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2450 events. 196/2450 cut-off events. For 125/126 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21747 event pairs, 43 based on Foata normal form. 0/2132 useless extension candidates. Maximal degree in co-relation 2811. Up to 144 conditions per place. [2022-11-18 20:40:03,912 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/644 dead transitions. [2022-11-18 20:40:03,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 644 transitions, 1696 flow [2022-11-18 20:40:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4126 transitions. [2022-11-18 20:40:03,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8944287882072404 [2022-11-18 20:40:03,917 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4126 transitions. [2022-11-18 20:40:03,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4126 transitions. [2022-11-18 20:40:03,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:03,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4126 transitions. [2022-11-18 20:40:03,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.4285714285714) internal successors, (4126), 7 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,932 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,933 INFO L175 Difference]: Start difference. First operand has 608 places, 632 transitions, 1551 flow. Second operand 7 states and 4126 transitions. [2022-11-18 20:40:03,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 644 transitions, 1696 flow [2022-11-18 20:40:03,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 644 transitions, 1686 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:03,946 INFO L231 Difference]: Finished difference. Result has 611 places, 631 transitions, 1551 flow [2022-11-18 20:40:03,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1551, PETRI_PLACES=611, PETRI_TRANSITIONS=631} [2022-11-18 20:40:03,947 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 25 predicate places. [2022-11-18 20:40:03,948 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 631 transitions, 1551 flow [2022-11-18 20:40:03,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:03,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:03,949 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:03,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:40:03,950 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:03,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:03,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1863558828, now seen corresponding path program 1 times [2022-11-18 20:40:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:03,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702920296] [2022-11-18 20:40:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:03,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:04,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:04,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702920296] [2022-11-18 20:40:04,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702920296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:04,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:04,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:04,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257040644] [2022-11-18 20:40:04,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:04,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:04,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:04,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:04,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:04,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 631 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:04,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:04,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:04,770 INFO L130 PetriNetUnfolder]: 194/2445 cut-off events. [2022-11-18 20:40:04,770 INFO L131 PetriNetUnfolder]: For 129/130 co-relation queries the response was YES. [2022-11-18 20:40:04,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 2445 events. 194/2445 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20547 event pairs, 60 based on Foata normal form. 0/2137 useless extension candidates. Maximal degree in co-relation 2797. Up to 158 conditions per place. [2022-11-18 20:40:04,795 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 45 selfloop transitions, 6 changer transitions 0/637 dead transitions. [2022-11-18 20:40:04,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 637 transitions, 1669 flow [2022-11-18 20:40:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4119 transitions. [2022-11-18 20:40:04,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8929113375243876 [2022-11-18 20:40:04,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4119 transitions. [2022-11-18 20:40:04,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4119 transitions. [2022-11-18 20:40:04,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:04,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4119 transitions. [2022-11-18 20:40:04,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 588.4285714285714) internal successors, (4119), 7 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,814 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,814 INFO L175 Difference]: Start difference. First operand has 611 places, 631 transitions, 1551 flow. Second operand 7 states and 4119 transitions. [2022-11-18 20:40:04,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 637 transitions, 1669 flow [2022-11-18 20:40:04,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 637 transitions, 1659 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:04,827 INFO L231 Difference]: Finished difference. Result has 612 places, 630 transitions, 1551 flow [2022-11-18 20:40:04,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1551, PETRI_PLACES=612, PETRI_TRANSITIONS=630} [2022-11-18 20:40:04,828 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 26 predicate places. [2022-11-18 20:40:04,828 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 630 transitions, 1551 flow [2022-11-18 20:40:04,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:04,830 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:04,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:40:04,830 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash 933455099, now seen corresponding path program 1 times [2022-11-18 20:40:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:04,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112257322] [2022-11-18 20:40:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:04,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:04,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112257322] [2022-11-18 20:40:04,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112257322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:04,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:04,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215654701] [2022-11-18 20:40:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:04,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:40:04,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:04,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 630 transitions, 1551 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:04,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:04,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:04,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:05,607 INFO L130 PetriNetUnfolder]: 161/2487 cut-off events. [2022-11-18 20:40:05,607 INFO L131 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-11-18 20:40:05,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 2487 events. 161/2487 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20091 event pairs, 36 based on Foata normal form. 4/2167 useless extension candidates. Maximal degree in co-relation 2772. Up to 116 conditions per place. [2022-11-18 20:40:05,647 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 53 selfloop transitions, 6 changer transitions 0/645 dead transitions. [2022-11-18 20:40:05,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 645 transitions, 1696 flow [2022-11-18 20:40:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:40:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:40:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2385 transitions. [2022-11-18 20:40:05,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047799696509864 [2022-11-18 20:40:05,651 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2385 transitions. [2022-11-18 20:40:05,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2385 transitions. [2022-11-18 20:40:05,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:05,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2385 transitions. [2022-11-18 20:40:05,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 596.25) internal successors, (2385), 4 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,658 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,658 INFO L175 Difference]: Start difference. First operand has 612 places, 630 transitions, 1551 flow. Second operand 4 states and 2385 transitions. [2022-11-18 20:40:05,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 645 transitions, 1696 flow [2022-11-18 20:40:05,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 645 transitions, 1683 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:40:05,671 INFO L231 Difference]: Finished difference. Result has 608 places, 630 transitions, 1554 flow [2022-11-18 20:40:05,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1554, PETRI_PLACES=608, PETRI_TRANSITIONS=630} [2022-11-18 20:40:05,672 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 22 predicate places. [2022-11-18 20:40:05,673 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 630 transitions, 1554 flow [2022-11-18 20:40:05,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:05,674 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:05,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:40:05,674 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1211939284, now seen corresponding path program 1 times [2022-11-18 20:40:05,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:05,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363233300] [2022-11-18 20:40:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:05,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:05,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:05,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363233300] [2022-11-18 20:40:05,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363233300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:05,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:05,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34344825] [2022-11-18 20:40:05,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:05,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:05,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:05,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 630 transitions, 1554 flow. Second operand has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:05,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:05,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:05,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:06,677 INFO L130 PetriNetUnfolder]: 518/3266 cut-off events. [2022-11-18 20:40:06,677 INFO L131 PetriNetUnfolder]: For 604/611 co-relation queries the response was YES. [2022-11-18 20:40:06,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 3266 events. 518/3266 cut-off events. For 604/611 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 34653 event pairs, 161 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 4361. Up to 468 conditions per place. [2022-11-18 20:40:06,710 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/640 dead transitions. [2022-11-18 20:40:06,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 640 transitions, 1693 flow [2022-11-18 20:40:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4124 transitions. [2022-11-18 20:40:06,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8939952308692825 [2022-11-18 20:40:06,716 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4124 transitions. [2022-11-18 20:40:06,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4124 transitions. [2022-11-18 20:40:06,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:06,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4124 transitions. [2022-11-18 20:40:06,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.1428571428571) internal successors, (4124), 7 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,729 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,729 INFO L175 Difference]: Start difference. First operand has 608 places, 630 transitions, 1554 flow. Second operand 7 states and 4124 transitions. [2022-11-18 20:40:06,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 640 transitions, 1693 flow [2022-11-18 20:40:06,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 640 transitions, 1689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:06,743 INFO L231 Difference]: Finished difference. Result has 612 places, 629 transitions, 1560 flow [2022-11-18 20:40:06,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1560, PETRI_PLACES=612, PETRI_TRANSITIONS=629} [2022-11-18 20:40:06,744 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 26 predicate places. [2022-11-18 20:40:06,744 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 629 transitions, 1560 flow [2022-11-18 20:40:06,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:06,745 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:06,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:40:06,746 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash -677570634, now seen corresponding path program 1 times [2022-11-18 20:40:06,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:06,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710195075] [2022-11-18 20:40:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:06,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,865 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:06,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:06,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710195075] [2022-11-18 20:40:06,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710195075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:06,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:06,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:06,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760377714] [2022-11-18 20:40:06,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:06,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:06,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:06,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:06,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:40:06,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:06,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 629 transitions, 1560 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:06,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:06,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:06,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:07,602 INFO L130 PetriNetUnfolder]: 500/2879 cut-off events. [2022-11-18 20:40:07,602 INFO L131 PetriNetUnfolder]: For 730/737 co-relation queries the response was YES. [2022-11-18 20:40:07,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2879 events. 500/2879 cut-off events. For 730/737 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 29673 event pairs, 168 based on Foata normal form. 16/2205 useless extension candidates. Maximal degree in co-relation 3943. Up to 540 conditions per place. [2022-11-18 20:40:07,626 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 57 selfloop transitions, 6 changer transitions 0/643 dead transitions. [2022-11-18 20:40:07,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 643 transitions, 1708 flow [2022-11-18 20:40:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:40:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:40:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2389 transitions. [2022-11-18 20:40:07,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9062974203338392 [2022-11-18 20:40:07,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2389 transitions. [2022-11-18 20:40:07,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2389 transitions. [2022-11-18 20:40:07,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:07,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2389 transitions. [2022-11-18 20:40:07,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 597.25) internal successors, (2389), 4 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:07,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:07,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:07,637 INFO L175 Difference]: Start difference. First operand has 612 places, 629 transitions, 1560 flow. Second operand 4 states and 2389 transitions. [2022-11-18 20:40:07,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 643 transitions, 1708 flow [2022-11-18 20:40:07,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 643 transitions, 1694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:40:07,650 INFO L231 Difference]: Finished difference. Result has 610 places, 627 transitions, 1546 flow [2022-11-18 20:40:07,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1546, PETRI_PLACES=610, PETRI_TRANSITIONS=627} [2022-11-18 20:40:07,651 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 24 predicate places. [2022-11-18 20:40:07,651 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 627 transitions, 1546 flow [2022-11-18 20:40:07,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:07,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:07,652 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:07,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:40:07,653 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:07,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1290773533, now seen corresponding path program 1 times [2022-11-18 20:40:07,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:07,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327864605] [2022-11-18 20:40:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:07,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:07,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327864605] [2022-11-18 20:40:07,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327864605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:07,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:07,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:07,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562226037] [2022-11-18 20:40:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:07,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:07,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-18 20:40:07,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 627 transitions, 1546 flow. Second operand has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:07,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:07,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-18 20:40:07,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:08,594 INFO L130 PetriNetUnfolder]: 203/2223 cut-off events. [2022-11-18 20:40:08,594 INFO L131 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-11-18 20:40:08,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 2223 events. 203/2223 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 18582 event pairs, 41 based on Foata normal form. 0/1975 useless extension candidates. Maximal degree in co-relation 2707. Up to 109 conditions per place. [2022-11-18 20:40:08,618 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 59 selfloop transitions, 12 changer transitions 0/644 dead transitions. [2022-11-18 20:40:08,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 644 transitions, 1730 flow [2022-11-18 20:40:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5782 transitions. [2022-11-18 20:40:08,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773899848254931 [2022-11-18 20:40:08,625 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5782 transitions. [2022-11-18 20:40:08,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5782 transitions. [2022-11-18 20:40:08,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:08,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5782 transitions. [2022-11-18 20:40:08,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.2) internal successors, (5782), 10 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,641 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,642 INFO L175 Difference]: Start difference. First operand has 610 places, 627 transitions, 1546 flow. Second operand 10 states and 5782 transitions. [2022-11-18 20:40:08,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 644 transitions, 1730 flow [2022-11-18 20:40:08,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 644 transitions, 1720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:08,655 INFO L231 Difference]: Finished difference. Result has 619 places, 628 transitions, 1572 flow [2022-11-18 20:40:08,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1572, PETRI_PLACES=619, PETRI_TRANSITIONS=628} [2022-11-18 20:40:08,656 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 33 predicate places. [2022-11-18 20:40:08,656 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 628 transitions, 1572 flow [2022-11-18 20:40:08,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:08,658 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:08,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:40:08,658 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:08,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:08,659 INFO L85 PathProgramCache]: Analyzing trace with hash 470148789, now seen corresponding path program 1 times [2022-11-18 20:40:08,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:08,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254733351] [2022-11-18 20:40:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:08,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:08,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:08,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254733351] [2022-11-18 20:40:08,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254733351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:08,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:08,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:08,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018321138] [2022-11-18 20:40:08,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:08,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:08,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:08,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:08,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:08,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 628 transitions, 1572 flow. Second operand has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:08,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:08,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:08,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:09,689 INFO L130 PetriNetUnfolder]: 492/3229 cut-off events. [2022-11-18 20:40:09,690 INFO L131 PetriNetUnfolder]: For 588/613 co-relation queries the response was YES. [2022-11-18 20:40:09,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 3229 events. 492/3229 cut-off events. For 588/613 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 33354 event pairs, 225 based on Foata normal form. 0/2609 useless extension candidates. Maximal degree in co-relation 4345. Up to 491 conditions per place. [2022-11-18 20:40:09,718 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 44 selfloop transitions, 6 changer transitions 0/633 dead transitions. [2022-11-18 20:40:09,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 633 transitions, 1691 flow [2022-11-18 20:40:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4118 transitions. [2022-11-18 20:40:09,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8926945588554086 [2022-11-18 20:40:09,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4118 transitions. [2022-11-18 20:40:09,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4118 transitions. [2022-11-18 20:40:09,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:09,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4118 transitions. [2022-11-18 20:40:09,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 588.2857142857143) internal successors, (4118), 7 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,735 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,735 INFO L175 Difference]: Start difference. First operand has 619 places, 628 transitions, 1572 flow. Second operand 7 states and 4118 transitions. [2022-11-18 20:40:09,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 633 transitions, 1691 flow [2022-11-18 20:40:09,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 633 transitions, 1671 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:09,748 INFO L231 Difference]: Finished difference. Result has 620 places, 627 transitions, 1568 flow [2022-11-18 20:40:09,749 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1568, PETRI_PLACES=620, PETRI_TRANSITIONS=627} [2022-11-18 20:40:09,749 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 34 predicate places. [2022-11-18 20:40:09,750 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 627 transitions, 1568 flow [2022-11-18 20:40:09,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:09,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:09,751 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:09,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:40:09,751 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:09,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1359272095, now seen corresponding path program 1 times [2022-11-18 20:40:09,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:09,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366757213] [2022-11-18 20:40:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:09,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:10,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:10,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366757213] [2022-11-18 20:40:10,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366757213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:10,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:10,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:10,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259336486] [2022-11-18 20:40:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:10,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:10,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:10,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-18 20:40:10,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 627 transitions, 1568 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:10,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-18 20:40:10,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:10,751 INFO L130 PetriNetUnfolder]: 183/2194 cut-off events. [2022-11-18 20:40:10,751 INFO L131 PetriNetUnfolder]: For 202/203 co-relation queries the response was YES. [2022-11-18 20:40:10,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 2194 events. 183/2194 cut-off events. For 202/203 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18125 event pairs, 43 based on Foata normal form. 0/1955 useless extension candidates. Maximal degree in co-relation 2736. Up to 114 conditions per place. [2022-11-18 20:40:10,769 INFO L137 encePairwiseOnDemand]: 645/659 looper letters, 61 selfloop transitions, 13 changer transitions 0/646 dead transitions. [2022-11-18 20:40:10,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 646 transitions, 1781 flow [2022-11-18 20:40:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5784 transitions. [2022-11-18 20:40:10,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776934749620637 [2022-11-18 20:40:10,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5784 transitions. [2022-11-18 20:40:10,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5784 transitions. [2022-11-18 20:40:10,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:10,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5784 transitions. [2022-11-18 20:40:10,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.4) internal successors, (5784), 10 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,791 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,791 INFO L175 Difference]: Start difference. First operand has 620 places, 627 transitions, 1568 flow. Second operand 10 states and 5784 transitions. [2022-11-18 20:40:10,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 646 transitions, 1781 flow [2022-11-18 20:40:10,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 646 transitions, 1759 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:10,804 INFO L231 Difference]: Finished difference. Result has 627 places, 628 transitions, 1596 flow [2022-11-18 20:40:10,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1596, PETRI_PLACES=627, PETRI_TRANSITIONS=628} [2022-11-18 20:40:10,806 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 41 predicate places. [2022-11-18 20:40:10,806 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 628 transitions, 1596 flow [2022-11-18 20:40:10,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:10,807 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:10,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:40:10,807 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash -351322272, now seen corresponding path program 1 times [2022-11-18 20:40:10,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:10,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347927487] [2022-11-18 20:40:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:10,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:10,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:10,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347927487] [2022-11-18 20:40:10,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347927487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:10,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:10,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912576920] [2022-11-18 20:40:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:10,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-18 20:40:10,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 628 transitions, 1596 flow. Second operand has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:10,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-18 20:40:10,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:11,282 INFO L130 PetriNetUnfolder]: 55/1501 cut-off events. [2022-11-18 20:40:11,282 INFO L131 PetriNetUnfolder]: For 91/98 co-relation queries the response was YES. [2022-11-18 20:40:11,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 1501 events. 55/1501 cut-off events. For 91/98 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8331 event pairs, 5 based on Foata normal form. 0/1342 useless extension candidates. Maximal degree in co-relation 1725. Up to 32 conditions per place. [2022-11-18 20:40:11,312 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/631 dead transitions. [2022-11-18 20:40:11,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 631 transitions, 1629 flow [2022-11-18 20:40:11,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:11,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-18 20:40:11,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-18 20:40:11,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-18 20:40:11,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-18 20:40:11,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:11,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-18 20:40:11,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,321 INFO L175 Difference]: Start difference. First operand has 627 places, 628 transitions, 1596 flow. Second operand 3 states and 1874 transitions. [2022-11-18 20:40:11,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 631 transitions, 1629 flow [2022-11-18 20:40:11,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 631 transitions, 1614 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:11,334 INFO L231 Difference]: Finished difference. Result has 627 places, 630 transitions, 1603 flow [2022-11-18 20:40:11,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1603, PETRI_PLACES=627, PETRI_TRANSITIONS=630} [2022-11-18 20:40:11,335 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 41 predicate places. [2022-11-18 20:40:11,335 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 630 transitions, 1603 flow [2022-11-18 20:40:11,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:11,336 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:11,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:40:11,337 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1653554108, now seen corresponding path program 1 times [2022-11-18 20:40:11,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:11,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484615383] [2022-11-18 20:40:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:11,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:11,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:11,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484615383] [2022-11-18 20:40:11,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484615383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:11,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:11,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:11,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820833642] [2022-11-18 20:40:11,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:11,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:11,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:11,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:40:11,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:11,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 630 transitions, 1603 flow. Second operand has 4 states, 4 states have (on average 583.75) internal successors, (2335), 4 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:11,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:11,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:11,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:12,233 INFO L130 PetriNetUnfolder]: 535/2890 cut-off events. [2022-11-18 20:40:12,233 INFO L131 PetriNetUnfolder]: For 609/616 co-relation queries the response was YES. [2022-11-18 20:40:12,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 2890 events. 535/2890 cut-off events. For 609/616 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 29973 event pairs, 252 based on Foata normal form. 16/2202 useless extension candidates. Maximal degree in co-relation 4298. Up to 550 conditions per place. [2022-11-18 20:40:12,278 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/644 dead transitions. [2022-11-18 20:40:12,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 644 transitions, 1744 flow [2022-11-18 20:40:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:40:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:40:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2384 transitions. [2022-11-18 20:40:12,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044006069802731 [2022-11-18 20:40:12,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2384 transitions. [2022-11-18 20:40:12,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2384 transitions. [2022-11-18 20:40:12,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:12,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2384 transitions. [2022-11-18 20:40:12,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,289 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,289 INFO L175 Difference]: Start difference. First operand has 627 places, 630 transitions, 1603 flow. Second operand 4 states and 2384 transitions. [2022-11-18 20:40:12,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 644 transitions, 1744 flow [2022-11-18 20:40:12,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 644 transitions, 1734 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:40:12,302 INFO L231 Difference]: Finished difference. Result has 625 places, 630 transitions, 1610 flow [2022-11-18 20:40:12,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1610, PETRI_PLACES=625, PETRI_TRANSITIONS=630} [2022-11-18 20:40:12,304 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 39 predicate places. [2022-11-18 20:40:12,304 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 630 transitions, 1610 flow [2022-11-18 20:40:12,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.75) internal successors, (2335), 4 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:12,305 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:12,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:40:12,305 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash -699988186, now seen corresponding path program 1 times [2022-11-18 20:40:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:12,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892908929] [2022-11-18 20:40:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:12,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:12,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892908929] [2022-11-18 20:40:12,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892908929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:12,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:12,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:12,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512263851] [2022-11-18 20:40:12,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:12,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-18 20:40:12,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 630 transitions, 1610 flow. Second operand has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:12,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:12,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-18 20:40:12,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:13,154 INFO L130 PetriNetUnfolder]: 168/1394 cut-off events. [2022-11-18 20:40:13,155 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-11-18 20:40:13,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1394 events. 168/1394 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9490 event pairs, 76 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 2110. Up to 232 conditions per place. [2022-11-18 20:40:13,177 INFO L137 encePairwiseOnDemand]: 639/659 looper letters, 84 selfloop transitions, 18 changer transitions 0/646 dead transitions. [2022-11-18 20:40:13,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 646 transitions, 1851 flow [2022-11-18 20:40:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3890 transitions. [2022-11-18 20:40:13,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8432690223282029 [2022-11-18 20:40:13,182 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3890 transitions. [2022-11-18 20:40:13,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3890 transitions. [2022-11-18 20:40:13,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:13,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3890 transitions. [2022-11-18 20:40:13,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 555.7142857142857) internal successors, (3890), 7 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,193 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,193 INFO L175 Difference]: Start difference. First operand has 625 places, 630 transitions, 1610 flow. Second operand 7 states and 3890 transitions. [2022-11-18 20:40:13,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 646 transitions, 1851 flow [2022-11-18 20:40:13,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 646 transitions, 1845 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:13,207 INFO L231 Difference]: Finished difference. Result has 633 places, 638 transitions, 1703 flow [2022-11-18 20:40:13,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1703, PETRI_PLACES=633, PETRI_TRANSITIONS=638} [2022-11-18 20:40:13,208 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 47 predicate places. [2022-11-18 20:40:13,208 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 638 transitions, 1703 flow [2022-11-18 20:40:13,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:13,209 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:13,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:40:13,209 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:13,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:13,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2100442841, now seen corresponding path program 1 times [2022-11-18 20:40:13,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:13,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109097575] [2022-11-18 20:40:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:13,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:13,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:13,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109097575] [2022-11-18 20:40:13,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109097575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:13,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:13,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:13,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285271133] [2022-11-18 20:40:13,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:13,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:13,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:13,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:13,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:13,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:13,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 638 transitions, 1703 flow. Second operand has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:13,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:13,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:14,044 INFO L130 PetriNetUnfolder]: 160/2496 cut-off events. [2022-11-18 20:40:14,044 INFO L131 PetriNetUnfolder]: For 219/220 co-relation queries the response was YES. [2022-11-18 20:40:14,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3495 conditions, 2496 events. 160/2496 cut-off events. For 219/220 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 22498 event pairs, 48 based on Foata normal form. 0/2272 useless extension candidates. Maximal degree in co-relation 3407. Up to 129 conditions per place. [2022-11-18 20:40:14,069 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 43 selfloop transitions, 5 changer transitions 0/642 dead transitions. [2022-11-18 20:40:14,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 642 transitions, 1810 flow [2022-11-18 20:40:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:40:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:40:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-11-18 20:40:14,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932726353060192 [2022-11-18 20:40:14,073 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-11-18 20:40:14,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-11-18 20:40:14,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:14,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-11-18 20:40:14,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,083 INFO L175 Difference]: Start difference. First operand has 633 places, 638 transitions, 1703 flow. Second operand 6 states and 3532 transitions. [2022-11-18 20:40:14,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 642 transitions, 1810 flow [2022-11-18 20:40:14,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 642 transitions, 1810 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:40:14,099 INFO L231 Difference]: Finished difference. Result has 637 places, 637 transitions, 1711 flow [2022-11-18 20:40:14,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1711, PETRI_PLACES=637, PETRI_TRANSITIONS=637} [2022-11-18 20:40:14,100 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 51 predicate places. [2022-11-18 20:40:14,100 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 637 transitions, 1711 flow [2022-11-18 20:40:14,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:14,101 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:14,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:40:14,102 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1680813831, now seen corresponding path program 1 times [2022-11-18 20:40:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:14,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769926620] [2022-11-18 20:40:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:14,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:14,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:14,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769926620] [2022-11-18 20:40:14,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769926620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:14,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:14,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:40:14,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871402242] [2022-11-18 20:40:14,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:14,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:14,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:14,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:14,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 659 [2022-11-18 20:40:14,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 637 transitions, 1711 flow. Second operand has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:14,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 659 [2022-11-18 20:40:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:15,866 INFO L130 PetriNetUnfolder]: 262/7035 cut-off events. [2022-11-18 20:40:15,866 INFO L131 PetriNetUnfolder]: For 109/116 co-relation queries the response was YES. [2022-11-18 20:40:15,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 7035 events. 262/7035 cut-off events. For 109/116 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 70353 event pairs, 21 based on Foata normal form. 0/6187 useless extension candidates. Maximal degree in co-relation 8121. Up to 171 conditions per place. [2022-11-18 20:40:15,972 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 44 selfloop transitions, 4 changer transitions 0/657 dead transitions. [2022-11-18 20:40:15,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 657 transitions, 1849 flow [2022-11-18 20:40:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1858 transitions. [2022-11-18 20:40:15,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.939807789580172 [2022-11-18 20:40:15,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1858 transitions. [2022-11-18 20:40:15,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1858 transitions. [2022-11-18 20:40:15,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:15,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1858 transitions. [2022-11-18 20:40:15,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:15,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:15,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:15,978 INFO L175 Difference]: Start difference. First operand has 637 places, 637 transitions, 1711 flow. Second operand 3 states and 1858 transitions. [2022-11-18 20:40:15,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 657 transitions, 1849 flow [2022-11-18 20:40:15,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 657 transitions, 1840 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:15,997 INFO L231 Difference]: Finished difference. Result has 636 places, 638 transitions, 1726 flow [2022-11-18 20:40:15,998 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1726, PETRI_PLACES=636, PETRI_TRANSITIONS=638} [2022-11-18 20:40:15,999 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 50 predicate places. [2022-11-18 20:40:15,999 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 638 transitions, 1726 flow [2022-11-18 20:40:15,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:16,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:16,000 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:16,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:40:16,000 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:16,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:16,001 INFO L85 PathProgramCache]: Analyzing trace with hash -500193102, now seen corresponding path program 1 times [2022-11-18 20:40:16,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:16,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024940748] [2022-11-18 20:40:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:16,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:16,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024940748] [2022-11-18 20:40:16,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024940748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:16,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:16,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:16,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437907382] [2022-11-18 20:40:16,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:16,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:16,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-18 20:40:16,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 638 transitions, 1726 flow. Second operand has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:16,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:16,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-18 20:40:16,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:17,123 INFO L130 PetriNetUnfolder]: 239/1861 cut-off events. [2022-11-18 20:40:17,124 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2022-11-18 20:40:17,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1861 events. 239/1861 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12236 event pairs, 100 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 3071. Up to 305 conditions per place. [2022-11-18 20:40:17,162 INFO L137 encePairwiseOnDemand]: 638/659 looper letters, 103 selfloop transitions, 21 changer transitions 0/669 dead transitions. [2022-11-18 20:40:17,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 669 transitions, 2086 flow [2022-11-18 20:40:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:17,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3903 transitions. [2022-11-18 20:40:17,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8460871450249295 [2022-11-18 20:40:17,166 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3903 transitions. [2022-11-18 20:40:17,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3903 transitions. [2022-11-18 20:40:17,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:17,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3903 transitions. [2022-11-18 20:40:17,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.5714285714286) internal successors, (3903), 7 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:17,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:17,175 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:17,175 INFO L175 Difference]: Start difference. First operand has 636 places, 638 transitions, 1726 flow. Second operand 7 states and 3903 transitions. [2022-11-18 20:40:17,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 669 transitions, 2086 flow [2022-11-18 20:40:17,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 669 transitions, 2080 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:17,191 INFO L231 Difference]: Finished difference. Result has 644 places, 649 transitions, 1856 flow [2022-11-18 20:40:17,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1856, PETRI_PLACES=644, PETRI_TRANSITIONS=649} [2022-11-18 20:40:17,193 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 58 predicate places. [2022-11-18 20:40:17,193 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 649 transitions, 1856 flow [2022-11-18 20:40:17,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:17,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:17,194 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:17,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:40:17,194 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:17,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1127234916, now seen corresponding path program 1 times [2022-11-18 20:40:17,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:17,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578418654] [2022-11-18 20:40:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:17,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:17,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:17,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578418654] [2022-11-18 20:40:17,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578418654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:17,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:17,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020065387] [2022-11-18 20:40:17,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:17,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:17,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:17,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:17,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:17,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-18 20:40:17,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 649 transitions, 1856 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:17,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:17,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-18 20:40:17,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:18,781 INFO L130 PetriNetUnfolder]: 944/4687 cut-off events. [2022-11-18 20:40:18,781 INFO L131 PetriNetUnfolder]: For 1111/1122 co-relation queries the response was YES. [2022-11-18 20:40:18,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 4687 events. 944/4687 cut-off events. For 1111/1122 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 52878 event pairs, 241 based on Foata normal form. 0/3690 useless extension candidates. Maximal degree in co-relation 7194. Up to 836 conditions per place. [2022-11-18 20:40:18,835 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 57 selfloop transitions, 12 changer transitions 0/664 dead transitions. [2022-11-18 20:40:18,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 664 transitions, 2030 flow [2022-11-18 20:40:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5780 transitions. [2022-11-18 20:40:18,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770864946889226 [2022-11-18 20:40:18,841 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5780 transitions. [2022-11-18 20:40:18,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5780 transitions. [2022-11-18 20:40:18,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:18,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5780 transitions. [2022-11-18 20:40:18,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.0) internal successors, (5780), 10 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:18,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:18,855 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:18,855 INFO L175 Difference]: Start difference. First operand has 644 places, 649 transitions, 1856 flow. Second operand 10 states and 5780 transitions. [2022-11-18 20:40:18,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 664 transitions, 2030 flow [2022-11-18 20:40:18,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 664 transitions, 2030 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:40:18,873 INFO L231 Difference]: Finished difference. Result has 655 places, 650 transitions, 1892 flow [2022-11-18 20:40:18,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1892, PETRI_PLACES=655, PETRI_TRANSITIONS=650} [2022-11-18 20:40:18,874 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 69 predicate places. [2022-11-18 20:40:18,874 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 650 transitions, 1892 flow [2022-11-18 20:40:18,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:18,875 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:18,876 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:18,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:40:18,876 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1592495852, now seen corresponding path program 1 times [2022-11-18 20:40:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:18,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250509539] [2022-11-18 20:40:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250509539] [2022-11-18 20:40:18,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250509539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:18,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:18,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123306226] [2022-11-18 20:40:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:18,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-18 20:40:18,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 650 transitions, 1892 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:18,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:18,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-18 20:40:18,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:19,899 INFO L130 PetriNetUnfolder]: 208/3549 cut-off events. [2022-11-18 20:40:19,899 INFO L131 PetriNetUnfolder]: For 251/262 co-relation queries the response was YES. [2022-11-18 20:40:19,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4542 conditions, 3549 events. 208/3549 cut-off events. For 251/262 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 26652 event pairs, 55 based on Foata normal form. 0/3124 useless extension candidates. Maximal degree in co-relation 4436. Up to 152 conditions per place. [2022-11-18 20:40:19,933 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/653 dead transitions. [2022-11-18 20:40:19,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 653 transitions, 1925 flow [2022-11-18 20:40:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-18 20:40:19,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-18 20:40:19,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-18 20:40:19,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-18 20:40:19,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:19,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-18 20:40:19,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,938 INFO L175 Difference]: Start difference. First operand has 655 places, 650 transitions, 1892 flow. Second operand 3 states and 1874 transitions. [2022-11-18 20:40:19,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 653 transitions, 1925 flow [2022-11-18 20:40:19,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 653 transitions, 1911 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:19,950 INFO L231 Difference]: Finished difference. Result has 655 places, 652 transitions, 1900 flow [2022-11-18 20:40:19,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1900, PETRI_PLACES=655, PETRI_TRANSITIONS=652} [2022-11-18 20:40:19,951 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 69 predicate places. [2022-11-18 20:40:19,951 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 652 transitions, 1900 flow [2022-11-18 20:40:19,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:19,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:19,952 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:19,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 20:40:19,952 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:19,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:19,953 INFO L85 PathProgramCache]: Analyzing trace with hash 584546029, now seen corresponding path program 1 times [2022-11-18 20:40:19,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:19,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199747474] [2022-11-18 20:40:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:19,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:20,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:20,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199747474] [2022-11-18 20:40:20,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199747474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:20,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:20,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:20,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753634740] [2022-11-18 20:40:20,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:20,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:20,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:20,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-18 20:40:20,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 652 transitions, 1900 flow. Second operand has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:20,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:20,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-18 20:40:20,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:21,559 INFO L130 PetriNetUnfolder]: 824/4549 cut-off events. [2022-11-18 20:40:21,559 INFO L131 PetriNetUnfolder]: For 1072/1083 co-relation queries the response was YES. [2022-11-18 20:40:21,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7377 conditions, 4549 events. 824/4549 cut-off events. For 1072/1083 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 50625 event pairs, 253 based on Foata normal form. 0/3686 useless extension candidates. Maximal degree in co-relation 7233. Up to 726 conditions per place. [2022-11-18 20:40:21,634 INFO L137 encePairwiseOnDemand]: 645/659 looper letters, 59 selfloop transitions, 13 changer transitions 0/669 dead transitions. [2022-11-18 20:40:21,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 669 transitions, 2091 flow [2022-11-18 20:40:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5782 transitions. [2022-11-18 20:40:21,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773899848254931 [2022-11-18 20:40:21,640 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5782 transitions. [2022-11-18 20:40:21,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5782 transitions. [2022-11-18 20:40:21,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:21,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5782 transitions. [2022-11-18 20:40:21,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.2) internal successors, (5782), 10 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,658 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,658 INFO L175 Difference]: Start difference. First operand has 655 places, 652 transitions, 1900 flow. Second operand 10 states and 5782 transitions. [2022-11-18 20:40:21,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 669 transitions, 2091 flow [2022-11-18 20:40:21,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 669 transitions, 2085 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:21,677 INFO L231 Difference]: Finished difference. Result has 664 places, 653 transitions, 1932 flow [2022-11-18 20:40:21,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1932, PETRI_PLACES=664, PETRI_TRANSITIONS=653} [2022-11-18 20:40:21,679 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 78 predicate places. [2022-11-18 20:40:21,679 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 653 transitions, 1932 flow [2022-11-18 20:40:21,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:21,681 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:21,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 20:40:21,681 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1347155757, now seen corresponding path program 1 times [2022-11-18 20:40:21,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:21,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380578356] [2022-11-18 20:40:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:21,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:21,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380578356] [2022-11-18 20:40:21,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380578356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:21,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:21,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103948311] [2022-11-18 20:40:21,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:21,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:21,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:21,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-18 20:40:21,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 653 transitions, 1932 flow. Second operand has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:21,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:21,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-18 20:40:21,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:23,023 INFO L130 PetriNetUnfolder]: 265/2666 cut-off events. [2022-11-18 20:40:23,023 INFO L131 PetriNetUnfolder]: For 469/471 co-relation queries the response was YES. [2022-11-18 20:40:23,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 2666 events. 265/2666 cut-off events. For 469/471 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22830 event pairs, 36 based on Foata normal form. 12/2531 useless extension candidates. Maximal degree in co-relation 4283. Up to 188 conditions per place. [2022-11-18 20:40:23,081 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 57 selfloop transitions, 13 changer transitions 0/665 dead transitions. [2022-11-18 20:40:23,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 665 transitions, 2092 flow [2022-11-18 20:40:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:23,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5778 transitions. [2022-11-18 20:40:23,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.876783004552352 [2022-11-18 20:40:23,086 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5778 transitions. [2022-11-18 20:40:23,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5778 transitions. [2022-11-18 20:40:23,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:23,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5778 transitions. [2022-11-18 20:40:23,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.8) internal successors, (5778), 10 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,101 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,101 INFO L175 Difference]: Start difference. First operand has 664 places, 653 transitions, 1932 flow. Second operand 10 states and 5778 transitions. [2022-11-18 20:40:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 665 transitions, 2092 flow [2022-11-18 20:40:23,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 665 transitions, 2073 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:40:23,119 INFO L231 Difference]: Finished difference. Result has 667 places, 651 transitions, 1923 flow [2022-11-18 20:40:23,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1923, PETRI_PLACES=667, PETRI_TRANSITIONS=651} [2022-11-18 20:40:23,121 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 81 predicate places. [2022-11-18 20:40:23,121 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 651 transitions, 1923 flow [2022-11-18 20:40:23,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:23,122 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:23,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:40:23,123 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:23,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:23,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1379264819, now seen corresponding path program 1 times [2022-11-18 20:40:23,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:23,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079678449] [2022-11-18 20:40:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:23,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:23,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079678449] [2022-11-18 20:40:23,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079678449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:23,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:23,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:40:23,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372994648] [2022-11-18 20:40:23,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:23,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:23,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 659 [2022-11-18 20:40:23,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 651 transitions, 1923 flow. Second operand has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:23,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:23,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 659 [2022-11-18 20:40:23,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:25,018 INFO L130 PetriNetUnfolder]: 643/6183 cut-off events. [2022-11-18 20:40:25,019 INFO L131 PetriNetUnfolder]: For 586/597 co-relation queries the response was YES. [2022-11-18 20:40:25,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 6183 events. 643/6183 cut-off events. For 586/597 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 67001 event pairs, 176 based on Foata normal form. 0/5157 useless extension candidates. Maximal degree in co-relation 8300. Up to 522 conditions per place. [2022-11-18 20:40:25,111 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 43 selfloop transitions, 4 changer transitions 0/670 dead transitions. [2022-11-18 20:40:25,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 670 transitions, 2056 flow [2022-11-18 20:40:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1857 transitions. [2022-11-18 20:40:25,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393019726858877 [2022-11-18 20:40:25,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1857 transitions. [2022-11-18 20:40:25,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1857 transitions. [2022-11-18 20:40:25,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:25,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1857 transitions. [2022-11-18 20:40:25,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.0) internal successors, (1857), 3 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:25,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:25,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:25,117 INFO L175 Difference]: Start difference. First operand has 667 places, 651 transitions, 1923 flow. Second operand 3 states and 1857 transitions. [2022-11-18 20:40:25,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 670 transitions, 2056 flow [2022-11-18 20:40:25,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 670 transitions, 2029 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-18 20:40:25,136 INFO L231 Difference]: Finished difference. Result has 663 places, 652 transitions, 1920 flow [2022-11-18 20:40:25,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1920, PETRI_PLACES=663, PETRI_TRANSITIONS=652} [2022-11-18 20:40:25,138 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 77 predicate places. [2022-11-18 20:40:25,138 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 652 transitions, 1920 flow [2022-11-18 20:40:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:25,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:25,139 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:25,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:40:25,140 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1892975443, now seen corresponding path program 1 times [2022-11-18 20:40:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:25,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104703575] [2022-11-18 20:40:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:25,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:25,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104703575] [2022-11-18 20:40:25,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104703575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:25,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:25,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:25,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933910287] [2022-11-18 20:40:25,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:25,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:25,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:25,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:25,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-18 20:40:25,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 652 transitions, 1920 flow. Second operand has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:25,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:25,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-18 20:40:25,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:27,028 INFO L130 PetriNetUnfolder]: 1081/6839 cut-off events. [2022-11-18 20:40:27,028 INFO L131 PetriNetUnfolder]: For 1352/1363 co-relation queries the response was YES. [2022-11-18 20:40:27,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10825 conditions, 6839 events. 1081/6839 cut-off events. For 1352/1363 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 81469 event pairs, 301 based on Foata normal form. 0/5627 useless extension candidates. Maximal degree in co-relation 10489. Up to 1350 conditions per place. [2022-11-18 20:40:27,122 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 42 selfloop transitions, 5 changer transitions 0/655 dead transitions. [2022-11-18 20:40:27,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 655 transitions, 2022 flow [2022-11-18 20:40:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:40:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:40:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-11-18 20:40:27,126 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932726353060192 [2022-11-18 20:40:27,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-11-18 20:40:27,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-11-18 20:40:27,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:27,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-11-18 20:40:27,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,134 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,134 INFO L175 Difference]: Start difference. First operand has 663 places, 652 transitions, 1920 flow. Second operand 6 states and 3532 transitions. [2022-11-18 20:40:27,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 655 transitions, 2022 flow [2022-11-18 20:40:27,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 655 transitions, 2018 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:27,156 INFO L231 Difference]: Finished difference. Result has 666 places, 651 transitions, 1924 flow [2022-11-18 20:40:27,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=666, PETRI_TRANSITIONS=651} [2022-11-18 20:40:27,157 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 80 predicate places. [2022-11-18 20:40:27,157 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 651 transitions, 1924 flow [2022-11-18 20:40:27,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:27,158 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:27,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 20:40:27,159 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1001537198, now seen corresponding path program 1 times [2022-11-18 20:40:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:27,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425205358] [2022-11-18 20:40:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:27,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:27,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:27,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425205358] [2022-11-18 20:40:27,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425205358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:27,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:27,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:27,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164938921] [2022-11-18 20:40:27,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:27,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:27,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:27,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:27,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-18 20:40:27,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 651 transitions, 1924 flow. Second operand has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:27,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:27,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-18 20:40:27,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:30,131 INFO L130 PetriNetUnfolder]: 2449/9889 cut-off events. [2022-11-18 20:40:30,131 INFO L131 PetriNetUnfolder]: For 2696/2707 co-relation queries the response was YES. [2022-11-18 20:40:30,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16371 conditions, 9889 events. 2449/9889 cut-off events. For 2696/2707 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 130728 event pairs, 1265 based on Foata normal form. 12/7252 useless extension candidates. Maximal degree in co-relation 16038. Up to 2659 conditions per place. [2022-11-18 20:40:30,253 INFO L137 encePairwiseOnDemand]: 639/659 looper letters, 81 selfloop transitions, 18 changer transitions 1/666 dead transitions. [2022-11-18 20:40:30,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 666 transitions, 2158 flow [2022-11-18 20:40:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3888 transitions. [2022-11-18 20:40:30,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.842835464990245 [2022-11-18 20:40:30,257 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3888 transitions. [2022-11-18 20:40:30,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3888 transitions. [2022-11-18 20:40:30,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:30,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3888 transitions. [2022-11-18 20:40:30,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 555.4285714285714) internal successors, (3888), 7 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:30,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:30,262 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:30,262 INFO L175 Difference]: Start difference. First operand has 666 places, 651 transitions, 1924 flow. Second operand 7 states and 3888 transitions. [2022-11-18 20:40:30,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 666 transitions, 2158 flow [2022-11-18 20:40:30,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 666 transitions, 2147 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:40:30,281 INFO L231 Difference]: Finished difference. Result has 671 places, 659 transitions, 2012 flow [2022-11-18 20:40:30,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2012, PETRI_PLACES=671, PETRI_TRANSITIONS=659} [2022-11-18 20:40:30,282 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 85 predicate places. [2022-11-18 20:40:30,283 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 659 transitions, 2012 flow [2022-11-18 20:40:30,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:30,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:30,284 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:30,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 20:40:30,284 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:30,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1187846289, now seen corresponding path program 1 times [2022-11-18 20:40:30,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:30,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606100319] [2022-11-18 20:40:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:30,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:30,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:30,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606100319] [2022-11-18 20:40:30,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606100319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:30,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:30,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:30,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817632454] [2022-11-18 20:40:30,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:30,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:30,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:30,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-18 20:40:30,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 659 transitions, 2012 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:30,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:30,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-18 20:40:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:31,985 INFO L130 PetriNetUnfolder]: 352/3644 cut-off events. [2022-11-18 20:40:31,985 INFO L131 PetriNetUnfolder]: For 563/565 co-relation queries the response was YES. [2022-11-18 20:40:32,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 3644 events. 352/3644 cut-off events. For 563/565 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 33614 event pairs, 55 based on Foata normal form. 16/3431 useless extension candidates. Maximal degree in co-relation 5910. Up to 240 conditions per place. [2022-11-18 20:40:32,087 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 58 selfloop transitions, 13 changer transitions 0/674 dead transitions. [2022-11-18 20:40:32,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 674 transitions, 2196 flow [2022-11-18 20:40:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5779 transitions. [2022-11-18 20:40:32,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769347496206373 [2022-11-18 20:40:32,092 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5779 transitions. [2022-11-18 20:40:32,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5779 transitions. [2022-11-18 20:40:32,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:32,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5779 transitions. [2022-11-18 20:40:32,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.9) internal successors, (5779), 10 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:32,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:32,106 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:32,106 INFO L175 Difference]: Start difference. First operand has 671 places, 659 transitions, 2012 flow. Second operand 10 states and 5779 transitions. [2022-11-18 20:40:32,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 674 transitions, 2196 flow [2022-11-18 20:40:32,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 678 places, 674 transitions, 2192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:32,125 INFO L231 Difference]: Finished difference. Result has 678 places, 658 transitions, 2030 flow [2022-11-18 20:40:32,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2030, PETRI_PLACES=678, PETRI_TRANSITIONS=658} [2022-11-18 20:40:32,126 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 92 predicate places. [2022-11-18 20:40:32,126 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 658 transitions, 2030 flow [2022-11-18 20:40:32,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:32,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:32,127 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:32,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 20:40:32,128 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:32,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1258277645, now seen corresponding path program 1 times [2022-11-18 20:40:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:32,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444037853] [2022-11-18 20:40:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:32,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:32,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444037853] [2022-11-18 20:40:32,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444037853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:32,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:32,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:40:32,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724373819] [2022-11-18 20:40:32,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:32,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:40:32,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:32,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:40:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:40:32,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-18 20:40:32,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 658 transitions, 2030 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:32,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:32,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-18 20:40:32,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:35,481 INFO L130 PetriNetUnfolder]: 2317/9321 cut-off events. [2022-11-18 20:40:35,481 INFO L131 PetriNetUnfolder]: For 3125/3136 co-relation queries the response was YES. [2022-11-18 20:40:35,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 9321 events. 2317/9321 cut-off events. For 3125/3136 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 123738 event pairs, 1100 based on Foata normal form. 12/7129 useless extension candidates. Maximal degree in co-relation 16431. Up to 2314 conditions per place. [2022-11-18 20:40:35,579 INFO L137 encePairwiseOnDemand]: 638/659 looper letters, 101 selfloop transitions, 21 changer transitions 1/688 dead transitions. [2022-11-18 20:40:35,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 688 transitions, 2385 flow [2022-11-18 20:40:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:40:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:40:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3902 transitions. [2022-11-18 20:40:35,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8458703663559506 [2022-11-18 20:40:35,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3902 transitions. [2022-11-18 20:40:35,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3902 transitions. [2022-11-18 20:40:35,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:35,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3902 transitions. [2022-11-18 20:40:35,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.4285714285714) internal successors, (3902), 7 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,594 INFO L175 Difference]: Start difference. First operand has 678 places, 658 transitions, 2030 flow. Second operand 7 states and 3902 transitions. [2022-11-18 20:40:35,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 688 transitions, 2385 flow [2022-11-18 20:40:35,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 688 transitions, 2356 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-18 20:40:35,633 INFO L231 Difference]: Finished difference. Result has 680 places, 669 transitions, 2137 flow [2022-11-18 20:40:35,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2137, PETRI_PLACES=680, PETRI_TRANSITIONS=669} [2022-11-18 20:40:35,634 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 94 predicate places. [2022-11-18 20:40:35,634 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 669 transitions, 2137 flow [2022-11-18 20:40:35,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:35,635 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:35,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 20:40:35,635 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2118053153, now seen corresponding path program 1 times [2022-11-18 20:40:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:35,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404639788] [2022-11-18 20:40:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:35,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404639788] [2022-11-18 20:40:35,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404639788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:35,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:35,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262276015] [2022-11-18 20:40:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:35,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:35,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-18 20:40:35,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 669 transitions, 2137 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:35,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:35,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-18 20:40:35,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:38,033 INFO L130 PetriNetUnfolder]: 1380/6993 cut-off events. [2022-11-18 20:40:38,033 INFO L131 PetriNetUnfolder]: For 2801/2812 co-relation queries the response was YES. [2022-11-18 20:40:38,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13887 conditions, 6993 events. 1380/6993 cut-off events. For 2801/2812 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 83596 event pairs, 223 based on Foata normal form. 56/6040 useless extension candidates. Maximal degree in co-relation 13547. Up to 1111 conditions per place. [2022-11-18 20:40:38,173 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 51 selfloop transitions, 13 changer transitions 4/679 dead transitions. [2022-11-18 20:40:38,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 679 transitions, 2287 flow [2022-11-18 20:40:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5776 transitions. [2022-11-18 20:40:38,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764795144157815 [2022-11-18 20:40:38,178 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5776 transitions. [2022-11-18 20:40:38,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5776 transitions. [2022-11-18 20:40:38,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:38,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5776 transitions. [2022-11-18 20:40:38,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.6) internal successors, (5776), 10 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:38,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:38,188 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:38,188 INFO L175 Difference]: Start difference. First operand has 680 places, 669 transitions, 2137 flow. Second operand 10 states and 5776 transitions. [2022-11-18 20:40:38,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 679 transitions, 2287 flow [2022-11-18 20:40:38,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 679 transitions, 2283 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:40:38,245 INFO L231 Difference]: Finished difference. Result has 687 places, 667 transitions, 2143 flow [2022-11-18 20:40:38,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2143, PETRI_PLACES=687, PETRI_TRANSITIONS=667} [2022-11-18 20:40:38,246 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-18 20:40:38,246 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 667 transitions, 2143 flow [2022-11-18 20:40:38,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:38,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:38,248 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:38,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-18 20:40:38,248 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:38,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:38,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1235136270, now seen corresponding path program 1 times [2022-11-18 20:40:38,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:38,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044135372] [2022-11-18 20:40:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:38,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:38,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044135372] [2022-11-18 20:40:38,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044135372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:38,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:38,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159110177] [2022-11-18 20:40:38,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:38,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:38,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:38,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-18 20:40:38,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 667 transitions, 2143 flow. Second operand has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:38,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:38,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-18 20:40:38,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:40,605 INFO L130 PetriNetUnfolder]: 1172/6729 cut-off events. [2022-11-18 20:40:40,605 INFO L131 PetriNetUnfolder]: For 2683/2694 co-relation queries the response was YES. [2022-11-18 20:40:40,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13446 conditions, 6729 events. 1172/6729 cut-off events. For 2683/2694 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 79849 event pairs, 223 based on Foata normal form. 56/5921 useless extension candidates. Maximal degree in co-relation 13103. Up to 935 conditions per place. [2022-11-18 20:40:40,706 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 44 selfloop transitions, 13 changer transitions 12/680 dead transitions. [2022-11-18 20:40:40,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 680 transitions, 2319 flow [2022-11-18 20:40:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:40:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:40:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5777 transitions. [2022-11-18 20:40:40,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766312594840667 [2022-11-18 20:40:40,711 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5777 transitions. [2022-11-18 20:40:40,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5777 transitions. [2022-11-18 20:40:40,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:40,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5777 transitions. [2022-11-18 20:40:40,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.7) internal successors, (5777), 10 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,719 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,720 INFO L175 Difference]: Start difference. First operand has 687 places, 667 transitions, 2143 flow. Second operand 10 states and 5777 transitions. [2022-11-18 20:40:40,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 680 transitions, 2319 flow [2022-11-18 20:40:40,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 680 transitions, 2286 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-18 20:40:40,774 INFO L231 Difference]: Finished difference. Result has 687 places, 666 transitions, 2134 flow [2022-11-18 20:40:40,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2134, PETRI_PLACES=687, PETRI_TRANSITIONS=666} [2022-11-18 20:40:40,775 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-18 20:40:40,775 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 666 transitions, 2134 flow [2022-11-18 20:40:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:40,776 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:40,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 20:40:40,777 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash -67120319, now seen corresponding path program 1 times [2022-11-18 20:40:40,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:40,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729573131] [2022-11-18 20:40:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:40,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:40,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:40,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729573131] [2022-11-18 20:40:40,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729573131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:40,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:40,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:40,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801239754] [2022-11-18 20:40:40,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:40,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:40,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:40,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:40,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:40:40,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:40:40,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 666 transitions, 2134 flow. Second operand has 4 states, 4 states have (on average 599.25) internal successors, (2397), 4 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:40,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:40,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:40:40,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:43,361 INFO L130 PetriNetUnfolder]: 406/10260 cut-off events. [2022-11-18 20:40:43,362 INFO L131 PetriNetUnfolder]: For 1430/1437 co-relation queries the response was YES. [2022-11-18 20:40:43,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 10260 events. 406/10260 cut-off events. For 1430/1437 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 104386 event pairs, 26 based on Foata normal form. 0/9788 useless extension candidates. Maximal degree in co-relation 16098. Up to 595 conditions per place. [2022-11-18 20:40:43,496 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/690 dead transitions. [2022-11-18 20:40:43,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 690 transitions, 2302 flow [2022-11-18 20:40:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:40:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:40:43,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3045 transitions. [2022-11-18 20:40:43,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9241274658573596 [2022-11-18 20:40:43,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3045 transitions. [2022-11-18 20:40:43,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3045 transitions. [2022-11-18 20:40:43,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:43,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3045 transitions. [2022-11-18 20:40:43,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:43,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:43,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:43,512 INFO L175 Difference]: Start difference. First operand has 687 places, 666 transitions, 2134 flow. Second operand 5 states and 3045 transitions. [2022-11-18 20:40:43,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 690 transitions, 2302 flow [2022-11-18 20:40:43,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 690 transitions, 2275 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-18 20:40:43,612 INFO L231 Difference]: Finished difference. Result has 687 places, 668 transitions, 2139 flow [2022-11-18 20:40:43,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2139, PETRI_PLACES=687, PETRI_TRANSITIONS=668} [2022-11-18 20:40:43,613 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-18 20:40:43,613 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 668 transitions, 2139 flow [2022-11-18 20:40:43,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 599.25) internal successors, (2397), 4 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:43,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:43,614 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:43,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 20:40:43,614 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1786326451, now seen corresponding path program 1 times [2022-11-18 20:40:43,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:43,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074751734] [2022-11-18 20:40:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:43,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:43,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074751734] [2022-11-18 20:40:43,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074751734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:43,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:43,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118712567] [2022-11-18 20:40:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:43,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:43,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:43,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:43,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:40:43,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:40:43,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 668 transitions, 2139 flow. Second operand has 4 states, 4 states have (on average 599.5) internal successors, (2398), 4 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:43,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:43,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:40:43,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:45,614 INFO L130 PetriNetUnfolder]: 731/6093 cut-off events. [2022-11-18 20:40:45,614 INFO L131 PetriNetUnfolder]: For 1096/1107 co-relation queries the response was YES. [2022-11-18 20:40:45,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10090 conditions, 6093 events. 731/6093 cut-off events. For 1096/1107 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 67809 event pairs, 165 based on Foata normal form. 0/5396 useless extension candidates. Maximal degree in co-relation 9861. Up to 637 conditions per place. [2022-11-18 20:40:45,683 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 51 selfloop transitions, 6 changer transitions 0/691 dead transitions. [2022-11-18 20:40:45,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 691 transitions, 2302 flow [2022-11-18 20:40:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:40:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:40:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3044 transitions. [2022-11-18 20:40:45,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9238239757207891 [2022-11-18 20:40:45,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3044 transitions. [2022-11-18 20:40:45,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3044 transitions. [2022-11-18 20:40:45,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:45,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3044 transitions. [2022-11-18 20:40:45,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 608.8) internal successors, (3044), 5 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:45,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:45,690 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:45,691 INFO L175 Difference]: Start difference. First operand has 687 places, 668 transitions, 2139 flow. Second operand 5 states and 3044 transitions. [2022-11-18 20:40:45,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 691 transitions, 2302 flow [2022-11-18 20:40:45,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 689 places, 691 transitions, 2294 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:45,722 INFO L231 Difference]: Finished difference. Result has 692 places, 670 transitions, 2163 flow [2022-11-18 20:40:45,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2163, PETRI_PLACES=692, PETRI_TRANSITIONS=670} [2022-11-18 20:40:45,723 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 106 predicate places. [2022-11-18 20:40:45,723 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 670 transitions, 2163 flow [2022-11-18 20:40:45,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 599.5) internal successors, (2398), 4 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:45,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:45,724 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:45,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 20:40:45,725 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:45,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1367584952, now seen corresponding path program 1 times [2022-11-18 20:40:45,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:45,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312922827] [2022-11-18 20:40:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:45,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:45,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312922827] [2022-11-18 20:40:45,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312922827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496879613] [2022-11-18 20:40:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:45,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:45,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:45,912 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:45,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:40:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:46,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:40:46,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:46,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:46,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496879613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:46,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:46,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 20:40:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735407097] [2022-11-18 20:40:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:46,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:46,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:40:46,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:40:46,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 670 transitions, 2163 flow. Second operand has 4 states, 4 states have (on average 601.25) internal successors, (2405), 4 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:46,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:46,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:40:46,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:47,033 INFO L130 PetriNetUnfolder]: 101/1766 cut-off events. [2022-11-18 20:40:47,033 INFO L131 PetriNetUnfolder]: For 254/258 co-relation queries the response was YES. [2022-11-18 20:40:47,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 1766 events. 101/1766 cut-off events. For 254/258 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10508 event pairs, 0 based on Foata normal form. 2/1707 useless extension candidates. Maximal degree in co-relation 2725. Up to 129 conditions per place. [2022-11-18 20:40:47,092 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 32 selfloop transitions, 6 changer transitions 0/672 dead transitions. [2022-11-18 20:40:47,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 672 transitions, 2244 flow [2022-11-18 20:40:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:40:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:40:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2424 transitions. [2022-11-18 20:40:47,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9195751138088012 [2022-11-18 20:40:47,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2424 transitions. [2022-11-18 20:40:47,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2424 transitions. [2022-11-18 20:40:47,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:47,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2424 transitions. [2022-11-18 20:40:47,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:47,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:47,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:47,098 INFO L175 Difference]: Start difference. First operand has 692 places, 670 transitions, 2163 flow. Second operand 4 states and 2424 transitions. [2022-11-18 20:40:47,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 672 transitions, 2244 flow [2022-11-18 20:40:47,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 672 transitions, 2236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:47,116 INFO L231 Difference]: Finished difference. Result has 692 places, 669 transitions, 2163 flow [2022-11-18 20:40:47,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2163, PETRI_PLACES=692, PETRI_TRANSITIONS=669} [2022-11-18 20:40:47,118 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 106 predicate places. [2022-11-18 20:40:47,118 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 669 transitions, 2163 flow [2022-11-18 20:40:47,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 601.25) internal successors, (2405), 4 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:47,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:47,119 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:47,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:47,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 20:40:47,328 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:47,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:47,329 INFO L85 PathProgramCache]: Analyzing trace with hash -554537679, now seen corresponding path program 1 times [2022-11-18 20:40:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:47,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659931294] [2022-11-18 20:40:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:47,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659931294] [2022-11-18 20:40:47,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659931294] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:47,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399550466] [2022-11-18 20:40:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:47,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:47,498 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:47,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:40:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:47,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:40:47,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:47,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:47,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399550466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:47,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:47,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-18 20:40:47,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434782496] [2022-11-18 20:40:47,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:47,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:40:47,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:40:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:40:47,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:40:47,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 669 transitions, 2163 flow. Second operand has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:47,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:47,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:40:47,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:48,784 INFO L130 PetriNetUnfolder]: 98/1757 cut-off events. [2022-11-18 20:40:48,784 INFO L131 PetriNetUnfolder]: For 258/262 co-relation queries the response was YES. [2022-11-18 20:40:48,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1757 events. 98/1757 cut-off events. For 258/262 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10463 event pairs, 0 based on Foata normal form. 6/1702 useless extension candidates. Maximal degree in co-relation 2706. Up to 59 conditions per place. [2022-11-18 20:40:48,848 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 48 selfloop transitions, 8 changer transitions 0/690 dead transitions. [2022-11-18 20:40:48,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 690 transitions, 2319 flow [2022-11-18 20:40:48,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:40:48,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:40:48,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3640 transitions. [2022-11-18 20:40:48,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9205867475973698 [2022-11-18 20:40:48,852 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3640 transitions. [2022-11-18 20:40:48,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3640 transitions. [2022-11-18 20:40:48,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:48,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3640 transitions. [2022-11-18 20:40:48,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 606.6666666666666) internal successors, (3640), 6 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:48,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:48,861 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:48,861 INFO L175 Difference]: Start difference. First operand has 692 places, 669 transitions, 2163 flow. Second operand 6 states and 3640 transitions. [2022-11-18 20:40:48,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 690 transitions, 2319 flow [2022-11-18 20:40:48,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 690 transitions, 2305 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:40:48,876 INFO L231 Difference]: Finished difference. Result has 691 places, 666 transitions, 2155 flow [2022-11-18 20:40:48,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2155, PETRI_PLACES=691, PETRI_TRANSITIONS=666} [2022-11-18 20:40:48,877 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 105 predicate places. [2022-11-18 20:40:48,877 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 666 transitions, 2155 flow [2022-11-18 20:40:48,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:48,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:48,878 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:48,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:49,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-18 20:40:49,080 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:49,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1821783879, now seen corresponding path program 1 times [2022-11-18 20:40:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:49,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251658096] [2022-11-18 20:40:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:49,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:49,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:49,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251658096] [2022-11-18 20:40:49,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251658096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:49,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986953431] [2022-11-18 20:40:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:49,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:49,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:49,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:49,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:40:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:49,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:40:49,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:49,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:49,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986953431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:49,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:49,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 20:40:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233235144] [2022-11-18 20:40:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:49,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:49,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:40:49,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:40:49,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 666 transitions, 2155 flow. Second operand has 4 states, 4 states have (on average 601.5) internal successors, (2406), 4 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:49,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:49,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:40:49,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:51,377 INFO L130 PetriNetUnfolder]: 780/6518 cut-off events. [2022-11-18 20:40:51,378 INFO L131 PetriNetUnfolder]: For 1268/1280 co-relation queries the response was YES. [2022-11-18 20:40:51,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10897 conditions, 6518 events. 780/6518 cut-off events. For 1268/1280 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 73296 event pairs, 444 based on Foata normal form. 13/5805 useless extension candidates. Maximal degree in co-relation 10665. Up to 995 conditions per place. [2022-11-18 20:40:51,475 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 31 selfloop transitions, 6 changer transitions 0/667 dead transitions. [2022-11-18 20:40:51,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 667 transitions, 2231 flow [2022-11-18 20:40:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:40:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:40:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2423 transitions. [2022-11-18 20:40:51,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.919195751138088 [2022-11-18 20:40:51,477 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2423 transitions. [2022-11-18 20:40:51,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2423 transitions. [2022-11-18 20:40:51,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:51,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2423 transitions. [2022-11-18 20:40:51,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 605.75) internal successors, (2423), 4 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:51,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:51,481 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:51,482 INFO L175 Difference]: Start difference. First operand has 691 places, 666 transitions, 2155 flow. Second operand 4 states and 2423 transitions. [2022-11-18 20:40:51,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 667 transitions, 2231 flow [2022-11-18 20:40:51,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 667 transitions, 2212 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:40:51,513 INFO L231 Difference]: Finished difference. Result has 688 places, 665 transitions, 2144 flow [2022-11-18 20:40:51,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2144, PETRI_PLACES=688, PETRI_TRANSITIONS=665} [2022-11-18 20:40:51,514 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 102 predicate places. [2022-11-18 20:40:51,514 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 665 transitions, 2144 flow [2022-11-18 20:40:51,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 601.5) internal successors, (2406), 4 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:51,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:51,515 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:51,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:51,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:51,717 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash -640723395, now seen corresponding path program 1 times [2022-11-18 20:40:51,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:51,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530009582] [2022-11-18 20:40:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:51,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:51,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530009582] [2022-11-18 20:40:51,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530009582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702316704] [2022-11-18 20:40:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:51,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:51,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:40:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:40:52,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:52,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:40:52,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702316704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:52,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:40:52,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-18 20:40:52,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397800883] [2022-11-18 20:40:52,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:52,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:40:52,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:40:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:40:52,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:40:52,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 665 transitions, 2144 flow. Second operand has 5 states, 5 states have (on average 600.8) internal successors, (3004), 5 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:52,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:52,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:40:52,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:54,264 INFO L130 PetriNetUnfolder]: 744/6441 cut-off events. [2022-11-18 20:40:54,265 INFO L131 PetriNetUnfolder]: For 1263/1275 co-relation queries the response was YES. [2022-11-18 20:40:54,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 6441 events. 744/6441 cut-off events. For 1263/1275 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 71405 event pairs, 180 based on Foata normal form. 39/5795 useless extension candidates. Maximal degree in co-relation 10532. Up to 516 conditions per place. [2022-11-18 20:40:54,337 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 46 selfloop transitions, 8 changer transitions 0/684 dead transitions. [2022-11-18 20:40:54,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 684 transitions, 2290 flow [2022-11-18 20:40:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:40:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:40:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3638 transitions. [2022-11-18 20:40:54,341 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200809307030855 [2022-11-18 20:40:54,341 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3638 transitions. [2022-11-18 20:40:54,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3638 transitions. [2022-11-18 20:40:54,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:54,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3638 transitions. [2022-11-18 20:40:54,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 606.3333333333334) internal successors, (3638), 6 states have internal predecessors, (3638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:54,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:54,346 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:54,346 INFO L175 Difference]: Start difference. First operand has 688 places, 665 transitions, 2144 flow. Second operand 6 states and 3638 transitions. [2022-11-18 20:40:54,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 684 transitions, 2290 flow [2022-11-18 20:40:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 684 transitions, 2276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:40:54,377 INFO L231 Difference]: Finished difference. Result has 687 places, 662 transitions, 2136 flow [2022-11-18 20:40:54,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2136, PETRI_PLACES=687, PETRI_TRANSITIONS=662} [2022-11-18 20:40:54,379 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-18 20:40:54,379 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 662 transitions, 2136 flow [2022-11-18 20:40:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.8) internal successors, (3004), 5 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:54,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:54,380 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:54,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:54,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-18 20:40:54,586 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:54,586 INFO L85 PathProgramCache]: Analyzing trace with hash 759579150, now seen corresponding path program 1 times [2022-11-18 20:40:54,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:54,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163464108] [2022-11-18 20:40:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:54,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-18 20:40:54,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:54,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163464108] [2022-11-18 20:40:54,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163464108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:54,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:54,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:54,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982229963] [2022-11-18 20:40:54,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:54,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:54,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-18 20:40:54,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 662 transitions, 2136 flow. Second operand has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:54,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:54,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-18 20:40:54,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:55,412 INFO L130 PetriNetUnfolder]: 82/2108 cut-off events. [2022-11-18 20:40:55,413 INFO L131 PetriNetUnfolder]: For 289/297 co-relation queries the response was YES. [2022-11-18 20:40:55,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 2108 events. 82/2108 cut-off events. For 289/297 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12390 event pairs, 10 based on Foata normal form. 0/2032 useless extension candidates. Maximal degree in co-relation 3136. Up to 70 conditions per place. [2022-11-18 20:40:55,474 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/665 dead transitions. [2022-11-18 20:40:55,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 665 transitions, 2169 flow [2022-11-18 20:40:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:40:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:40:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-18 20:40:55,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-18 20:40:55,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-18 20:40:55,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-18 20:40:55,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:55,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-18 20:40:55,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,480 INFO L175 Difference]: Start difference. First operand has 687 places, 662 transitions, 2136 flow. Second operand 3 states and 1874 transitions. [2022-11-18 20:40:55,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 665 transitions, 2169 flow [2022-11-18 20:40:55,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 665 transitions, 2150 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:40:55,492 INFO L231 Difference]: Finished difference. Result has 686 places, 664 transitions, 2139 flow [2022-11-18 20:40:55,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2139, PETRI_PLACES=686, PETRI_TRANSITIONS=664} [2022-11-18 20:40:55,494 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 100 predicate places. [2022-11-18 20:40:55,494 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 664 transitions, 2139 flow [2022-11-18 20:40:55,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:55,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:55,495 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:55,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 20:40:55,495 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash -189774543, now seen corresponding path program 1 times [2022-11-18 20:40:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:55,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087729940] [2022-11-18 20:40:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:55,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:55,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087729940] [2022-11-18 20:40:55,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087729940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:55,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248260089] [2022-11-18 20:40:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:55,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:55,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:55,670 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:55,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:40:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:55,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:40:55,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:56,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:40:56,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248260089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:56,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:56,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-18 20:40:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098702693] [2022-11-18 20:40:56,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:56,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:40:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:40:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:56,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:40:56,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 664 transitions, 2139 flow. Second operand has 10 states, 10 states have (on average 600.9) internal successors, (6009), 10 states have internal predecessors, (6009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:56,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:56,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:40:56,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:58,142 INFO L130 PetriNetUnfolder]: 188/3171 cut-off events. [2022-11-18 20:40:58,142 INFO L131 PetriNetUnfolder]: For 405/409 co-relation queries the response was YES. [2022-11-18 20:40:58,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 3171 events. 188/3171 cut-off events. For 405/409 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 18536 event pairs, 20 based on Foata normal form. 6/3075 useless extension candidates. Maximal degree in co-relation 5032. Up to 107 conditions per place. [2022-11-18 20:40:58,236 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 89 selfloop transitions, 11 changer transitions 0/732 dead transitions. [2022-11-18 20:40:58,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 732 transitions, 2496 flow [2022-11-18 20:40:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:40:58,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:40:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5476 transitions. [2022-11-18 20:40:58,242 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9232844377002192 [2022-11-18 20:40:58,242 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5476 transitions. [2022-11-18 20:40:58,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5476 transitions. [2022-11-18 20:40:58,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:58,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5476 transitions. [2022-11-18 20:40:58,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 608.4444444444445) internal successors, (5476), 9 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:58,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:58,254 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:58,254 INFO L175 Difference]: Start difference. First operand has 686 places, 664 transitions, 2139 flow. Second operand 9 states and 5476 transitions. [2022-11-18 20:40:58,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 732 transitions, 2496 flow [2022-11-18 20:40:58,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 732 transitions, 2490 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:40:58,274 INFO L231 Difference]: Finished difference. Result has 697 places, 669 transitions, 2201 flow [2022-11-18 20:40:58,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2201, PETRI_PLACES=697, PETRI_TRANSITIONS=669} [2022-11-18 20:40:58,276 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 111 predicate places. [2022-11-18 20:40:58,276 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 669 transitions, 2201 flow [2022-11-18 20:40:58,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 600.9) internal successors, (6009), 10 states have internal predecessors, (6009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:58,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:58,277 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:58,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-18 20:40:58,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-18 20:40:58,484 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:40:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1738026950, now seen corresponding path program 1 times [2022-11-18 20:40:58,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:58,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008356474] [2022-11-18 20:40:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-18 20:40:58,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:58,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008356474] [2022-11-18 20:40:58,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008356474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:58,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:58,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:58,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041459797] [2022-11-18 20:40:58,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:58,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:40:58,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:40:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:40:58,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-18 20:40:58,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 669 transitions, 2201 flow. Second operand has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:58,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:58,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-18 20:40:58,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:01,241 INFO L130 PetriNetUnfolder]: 574/6758 cut-off events. [2022-11-18 20:41:01,241 INFO L131 PetriNetUnfolder]: For 920/940 co-relation queries the response was YES. [2022-11-18 20:41:01,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 6758 events. 574/6758 cut-off events. For 920/940 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 67994 event pairs, 200 based on Foata normal form. 0/6209 useless extension candidates. Maximal degree in co-relation 10384. Up to 475 conditions per place. [2022-11-18 20:41:01,410 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/672 dead transitions. [2022-11-18 20:41:01,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 672 transitions, 2234 flow [2022-11-18 20:41:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:41:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-18 20:41:01,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-18 20:41:01,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-18 20:41:01,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-18 20:41:01,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:01,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-18 20:41:01,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:01,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:01,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:01,415 INFO L175 Difference]: Start difference. First operand has 697 places, 669 transitions, 2201 flow. Second operand 3 states and 1874 transitions. [2022-11-18 20:41:01,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 672 transitions, 2234 flow [2022-11-18 20:41:01,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 672 transitions, 2220 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-18 20:41:01,444 INFO L231 Difference]: Finished difference. Result has 698 places, 671 transitions, 2209 flow [2022-11-18 20:41:01,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2209, PETRI_PLACES=698, PETRI_TRANSITIONS=671} [2022-11-18 20:41:01,445 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 112 predicate places. [2022-11-18 20:41:01,445 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 671 transitions, 2209 flow [2022-11-18 20:41:01,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:01,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:01,445 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:01,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-18 20:41:01,446 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:41:01,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash 497489405, now seen corresponding path program 1 times [2022-11-18 20:41:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:01,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699705015] [2022-11-18 20:41:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:01,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:01,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:01,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699705015] [2022-11-18 20:41:01,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699705015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:01,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036672745] [2022-11-18 20:41:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:01,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:01,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:01,635 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:41:01,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:41:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:01,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:41:01,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:02,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:02,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036672745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:02,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:41:02,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-18 20:41:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326265945] [2022-11-18 20:41:02,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:02,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:41:02,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:41:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:41:02,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:41:02,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 671 transitions, 2209 flow. Second operand has 10 states, 10 states have (on average 601.0) internal successors, (6010), 10 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:02,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:02,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:41:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:09,860 INFO L130 PetriNetUnfolder]: 2390/19951 cut-off events. [2022-11-18 20:41:09,860 INFO L131 PetriNetUnfolder]: For 3786/3806 co-relation queries the response was YES. [2022-11-18 20:41:10,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33470 conditions, 19951 events. 2390/19951 cut-off events. For 3786/3806 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 266949 event pairs, 400 based on Foata normal form. 63/17890 useless extension candidates. Maximal degree in co-relation 33233. Up to 1680 conditions per place. [2022-11-18 20:41:10,167 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 86 selfloop transitions, 11 changer transitions 0/736 dead transitions. [2022-11-18 20:41:10,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 736 transitions, 2551 flow [2022-11-18 20:41:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:41:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:41:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5473 transitions. [2022-11-18 20:41:10,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9227786208059349 [2022-11-18 20:41:10,172 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5473 transitions. [2022-11-18 20:41:10,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5473 transitions. [2022-11-18 20:41:10,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:10,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5473 transitions. [2022-11-18 20:41:10,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 608.1111111111111) internal successors, (5473), 9 states have internal predecessors, (5473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:10,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:10,179 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:10,179 INFO L175 Difference]: Start difference. First operand has 698 places, 671 transitions, 2209 flow. Second operand 9 states and 5473 transitions. [2022-11-18 20:41:10,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 736 transitions, 2551 flow [2022-11-18 20:41:10,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 736 transitions, 2545 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:41:10,368 INFO L231 Difference]: Finished difference. Result has 709 places, 676 transitions, 2271 flow [2022-11-18 20:41:10,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=709, PETRI_TRANSITIONS=676} [2022-11-18 20:41:10,369 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 123 predicate places. [2022-11-18 20:41:10,369 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 676 transitions, 2271 flow [2022-11-18 20:41:10,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 601.0) internal successors, (6010), 10 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:10,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:10,371 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:10,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:41:10,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:10,576 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:41:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash -219691039, now seen corresponding path program 1 times [2022-11-18 20:41:10,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:10,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671226488] [2022-11-18 20:41:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:10,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:10,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:10,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671226488] [2022-11-18 20:41:10,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671226488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:10,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677741505] [2022-11-18 20:41:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:10,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:10,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:10,887 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:41:10,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:41:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:11,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:41:11,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:11,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:11,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677741505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:11,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:41:11,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:41:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201955564] [2022-11-18 20:41:11,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:11,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:41:11,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:41:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:41:11,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:41:11,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 676 transitions, 2271 flow. Second operand has 16 states, 16 states have (on average 600.4375) internal successors, (9607), 16 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:11,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:11,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:41:11,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:20,929 INFO L130 PetriNetUnfolder]: 772/17429 cut-off events. [2022-11-18 20:41:20,929 INFO L131 PetriNetUnfolder]: For 2294/2302 co-relation queries the response was YES. [2022-11-18 20:41:21,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28095 conditions, 17429 events. 772/17429 cut-off events. For 2294/2302 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 161755 event pairs, 17 based on Foata normal form. 10/16796 useless extension candidates. Maximal degree in co-relation 27842. Up to 885 conditions per place. [2022-11-18 20:41:21,359 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 150 selfloop transitions, 26 changer transitions 0/815 dead transitions. [2022-11-18 20:41:21,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 815 transitions, 3002 flow [2022-11-18 20:41:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:41:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:41:21,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12119 transitions. [2022-11-18 20:41:21,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194992412746585 [2022-11-18 20:41:21,370 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12119 transitions. [2022-11-18 20:41:21,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12119 transitions. [2022-11-18 20:41:21,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:21,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12119 transitions. [2022-11-18 20:41:21,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 605.95) internal successors, (12119), 20 states have internal predecessors, (12119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,396 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,396 INFO L175 Difference]: Start difference. First operand has 709 places, 676 transitions, 2271 flow. Second operand 20 states and 12119 transitions. [2022-11-18 20:41:21,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 728 places, 815 transitions, 3002 flow [2022-11-18 20:41:21,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 815 transitions, 2988 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-18 20:41:21,590 INFO L231 Difference]: Finished difference. Result has 730 places, 691 transitions, 2425 flow [2022-11-18 20:41:21,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2425, PETRI_PLACES=730, PETRI_TRANSITIONS=691} [2022-11-18 20:41:21,591 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 144 predicate places. [2022-11-18 20:41:21,591 INFO L495 AbstractCegarLoop]: Abstraction has has 730 places, 691 transitions, 2425 flow [2022-11-18 20:41:21,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 600.4375) internal successors, (9607), 16 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:41:21,592 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:41:21,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:41:21,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:21,793 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-18 20:41:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1702614515, now seen corresponding path program 1 times [2022-11-18 20:41:21,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:21,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053685602] [2022-11-18 20:41:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:21,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:22,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:22,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053685602] [2022-11-18 20:41:22,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053685602] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:22,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903961230] [2022-11-18 20:41:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:22,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:22,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:22,172 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:41:22,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_242378f3-1cdb-469c-9ae4-ce0bacae3e81/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:41:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:41:22,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:22,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-18 20:41:23,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903961230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:23,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:41:23,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:41:23,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679664443] [2022-11-18 20:41:23,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:23,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:41:23,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:41:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:41:23,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-18 20:41:23,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 691 transitions, 2425 flow. Second operand has 16 states, 16 states have (on average 600.5) internal successors, (9608), 16 states have internal predecessors, (9608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:23,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:41:23,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-18 20:41:23,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:41:50,513 INFO L130 PetriNetUnfolder]: 6645/53178 cut-off events. [2022-11-18 20:41:50,513 INFO L131 PetriNetUnfolder]: For 11841/11873 co-relation queries the response was YES. [2022-11-18 20:41:51,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90025 conditions, 53178 events. 6645/53178 cut-off events. For 11841/11873 co-relation queries the response was YES. Maximal size of possible extension queue 2525. Compared 823148 event pairs, 512 based on Foata normal form. 165/47186 useless extension candidates. Maximal degree in co-relation 89779. Up to 4704 conditions per place.