./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN --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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- 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-6b4ec56 [2022-11-20 09:32:06,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:32:06,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:32:06,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:32:06,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:32:06,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:32:06,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:32:06,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:32:06,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:32:06,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:32:06,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:32:06,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:32:06,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:32:06,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:32:06,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:32:06,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:32:06,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:32:06,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:32:06,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:32:06,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:32:06,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:32:06,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:32:06,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:32:06,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:32:06,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:32:06,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:32:06,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:32:06,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:32:06,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:32:06,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:32:06,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:32:06,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:32:06,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:32:06,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:32:06,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:32:06,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:32:06,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:32:06,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:32:06,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:32:06,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:32:06,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:32:06,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 09:32:06,150 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:32:06,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:32:06,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:32:06,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:32:06,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:32:06,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:32:06,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:32:06,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:32:06,153 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:32:06,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:32:06,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:32:06,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:32:06,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:32:06,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:32:06,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:32:06,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:32:06,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:32:06,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:32:06,156 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 09:32:06,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:32:06,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:32:06,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:32:06,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:32:06,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:32:06,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:32:06,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:32:06,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:06,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:32:06,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:32:06,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:32:06,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:32:06,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:32:06,159 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:32:06,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:32:06,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:32:06,160 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_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-20 09:32:06,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:32:06,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:32:06,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:32:06,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:32:06,553 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:32:06,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-20 09:32:09,894 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:32:10,104 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:32:10,104 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-20 09:32:10,121 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/data/0bdcedfc6/3cb5e61b05cf44c0a70fd94e6fa88b2e/FLAG65cb803f3 [2022-11-20 09:32:10,138 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/data/0bdcedfc6/3cb5e61b05cf44c0a70fd94e6fa88b2e [2022-11-20 09:32:10,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:32:10,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:32:10,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:10,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:32:10,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:32:10,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c0042d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10, skipping insertion in model container [2022-11-20 09:32:10,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:32:10,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:32:10,435 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-20 09:32:10,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:10,459 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:32:10,489 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-20 09:32:10,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:10,509 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:32:10,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10 WrapperNode [2022-11-20 09:32:10,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:10,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:10,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:32:10,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:32:10,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,587 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 347 [2022-11-20 09:32:10,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:10,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:32:10,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:32:10,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:32:10,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,657 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:32:10,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:32:10,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:32:10,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:32:10,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (1/1) ... [2022-11-20 09:32:10,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:10,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:10,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:32:10,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:32:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:32:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:32:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:32:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:32:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:32:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:32:10,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:32:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:32:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:32:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:32:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:32:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:32:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:32:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:32:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:32:10,758 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:32:10,933 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:32:10,935 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:32:11,533 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:32:11,548 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:32:11,548 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:32:11,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:11 BoogieIcfgContainer [2022-11-20 09:32:11,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:32:11,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:32:11,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:32:11,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:32:11,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:32:10" (1/3) ... [2022-11-20 09:32:11,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e3c920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:11, skipping insertion in model container [2022-11-20 09:32:11,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:10" (2/3) ... [2022-11-20 09:32:11,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e3c920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:11, skipping insertion in model container [2022-11-20 09:32:11,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:11" (3/3) ... [2022-11-20 09:32:11,572 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-11-20 09:32:11,581 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:32:11,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:32:11,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-20 09:32:11,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:32:11,837 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 09:32:11,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 456 transitions, 936 flow [2022-11-20 09:32:12,146 INFO L130 PetriNetUnfolder]: 32/453 cut-off events. [2022-11-20 09:32:12,146 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 09:32:12,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 453 events. 32/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1307 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-11-20 09:32:12,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 456 transitions, 936 flow [2022-11-20 09:32:12,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 432 transitions, 879 flow [2022-11-20 09:32:12,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:32:12,187 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;@45a78600, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:32:12,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-20 09:32:12,209 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-20 09:32:12,209 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 09:32:12,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:12,210 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:12,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:12,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash 36374537, now seen corresponding path program 1 times [2022-11-20 09:32:12,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:12,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038126043] [2022-11-20 09:32:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:12,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:12,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038126043] [2022-11-20 09:32:12,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038126043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:12,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:12,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034730327] [2022-11-20 09:32:12,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:12,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:12,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:12,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-20 09:32:12,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 432 transitions, 879 flow. Second operand has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:12,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:12,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-20 09:32:12,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:13,231 INFO L130 PetriNetUnfolder]: 25/727 cut-off events. [2022-11-20 09:32:13,232 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-20 09:32:13,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 727 events. 25/727 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3631 event pairs, 0 based on Foata normal form. 66/691 useless extension candidates. Maximal degree in co-relation 557. Up to 18 conditions per place. [2022-11-20 09:32:13,253 INFO L137 encePairwiseOnDemand]: 432/456 looper letters, 26 selfloop transitions, 4 changer transitions 2/427 dead transitions. [2022-11-20 09:32:13,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 427 transitions, 944 flow [2022-11-20 09:32:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2156 transitions. [2022-11-20 09:32:13,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456140350877194 [2022-11-20 09:32:13,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2156 transitions. [2022-11-20 09:32:13,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2156 transitions. [2022-11-20 09:32:13,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:13,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2156 transitions. [2022-11-20 09:32:13,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.2) internal successors, (2156), 5 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:13,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:13,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:13,317 INFO L175 Difference]: Start difference. First operand has 411 places, 432 transitions, 879 flow. Second operand 5 states and 2156 transitions. [2022-11-20 09:32:13,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 427 transitions, 944 flow [2022-11-20 09:32:13,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 427 transitions, 926 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:13,338 INFO L231 Difference]: Finished difference. Result has 413 places, 415 transitions, 860 flow [2022-11-20 09:32:13,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=413, PETRI_TRANSITIONS=415} [2022-11-20 09:32:13,347 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 2 predicate places. [2022-11-20 09:32:13,347 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 415 transitions, 860 flow [2022-11-20 09:32:13,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:13,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:13,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:13,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:32:13,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:13,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1995569636, now seen corresponding path program 1 times [2022-11-20 09:32:13,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:13,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555954098] [2022-11-20 09:32:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:13,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:13,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:13,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555954098] [2022-11-20 09:32:13,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555954098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:13,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634291846] [2022-11-20 09:32:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:13,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:13,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:13,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:32:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:13,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:13,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:14,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:14,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634291846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:14,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:14,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 09:32:14,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690593666] [2022-11-20 09:32:14,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:14,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:32:14,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:14,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:32:14,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:32:14,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-20 09:32:14,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 415 transitions, 860 flow. Second operand has 12 states, 12 states have (on average 420.6666666666667) internal successors, (5048), 12 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:14,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:14,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-20 09:32:14,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:15,062 INFO L130 PetriNetUnfolder]: 61/1666 cut-off events. [2022-11-20 09:32:15,062 INFO L131 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-11-20 09:32:15,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1666 events. 61/1666 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11991 event pairs, 0 based on Foata normal form. 3/1424 useless extension candidates. Maximal degree in co-relation 1344. Up to 13 conditions per place. [2022-11-20 09:32:15,109 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 53 selfloop transitions, 18 changer transitions 0/466 dead transitions. [2022-11-20 09:32:15,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 466 transitions, 1150 flow [2022-11-20 09:32:15,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:32:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 09:32:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7598 transitions. [2022-11-20 09:32:15,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.925682261208577 [2022-11-20 09:32:15,125 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7598 transitions. [2022-11-20 09:32:15,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7598 transitions. [2022-11-20 09:32:15,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:15,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7598 transitions. [2022-11-20 09:32:15,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 422.1111111111111) internal successors, (7598), 18 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,172 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,172 INFO L175 Difference]: Start difference. First operand has 413 places, 415 transitions, 860 flow. Second operand 18 states and 7598 transitions. [2022-11-20 09:32:15,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 466 transitions, 1150 flow [2022-11-20 09:32:15,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 466 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:15,184 INFO L231 Difference]: Finished difference. Result has 431 places, 427 transitions, 964 flow [2022-11-20 09:32:15,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=964, PETRI_PLACES=431, PETRI_TRANSITIONS=427} [2022-11-20 09:32:15,186 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 20 predicate places. [2022-11-20 09:32:15,187 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 427 transitions, 964 flow [2022-11-20 09:32:15,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 420.6666666666667) internal successors, (5048), 12 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:15,191 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:15,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:15,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:15,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1733117573, now seen corresponding path program 1 times [2022-11-20 09:32:15,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:15,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580898248] [2022-11-20 09:32:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:15,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:15,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:15,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580898248] [2022-11-20 09:32:15,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580898248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:15,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378752623] [2022-11-20 09:32:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:15,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:15,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:15,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:15,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:32:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:15,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:15,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:15,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:15,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378752623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:15,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:32:15,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 09:32:15,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105187642] [2022-11-20 09:32:15,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:15,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:15,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:15,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:15,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-20 09:32:15,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 427 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 420.3333333333333) internal successors, (2522), 6 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:15,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:15,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-20 09:32:15,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:16,363 INFO L130 PetriNetUnfolder]: 61/1662 cut-off events. [2022-11-20 09:32:16,364 INFO L131 PetriNetUnfolder]: For 57/67 co-relation queries the response was YES. [2022-11-20 09:32:16,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1662 events. 61/1662 cut-off events. For 57/67 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11955 event pairs, 0 based on Foata normal form. 4/1421 useless extension candidates. Maximal degree in co-relation 1437. Up to 36 conditions per place. [2022-11-20 09:32:16,426 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 27 selfloop transitions, 11 changer transitions 0/433 dead transitions. [2022-11-20 09:32:16,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 433 transitions, 1041 flow [2022-11-20 09:32:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:32:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:32:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2956 transitions. [2022-11-20 09:32:16,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9260651629072681 [2022-11-20 09:32:16,434 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2956 transitions. [2022-11-20 09:32:16,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2956 transitions. [2022-11-20 09:32:16,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:16,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2956 transitions. [2022-11-20 09:32:16,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 422.2857142857143) internal successors, (2956), 7 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:16,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:16,455 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:16,455 INFO L175 Difference]: Start difference. First operand has 431 places, 427 transitions, 964 flow. Second operand 7 states and 2956 transitions. [2022-11-20 09:32:16,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 433 transitions, 1041 flow [2022-11-20 09:32:16,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 1009 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:16,470 INFO L231 Difference]: Finished difference. Result has 427 places, 423 transitions, 927 flow [2022-11-20 09:32:16,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=927, PETRI_PLACES=427, PETRI_TRANSITIONS=423} [2022-11-20 09:32:16,474 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 16 predicate places. [2022-11-20 09:32:16,474 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 423 transitions, 927 flow [2022-11-20 09:32:16,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 420.3333333333333) internal successors, (2522), 6 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:16,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:16,476 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] [2022-11-20 09:32:16,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:16,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:16,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:16,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash 653079758, now seen corresponding path program 1 times [2022-11-20 09:32:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:16,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336478208] [2022-11-20 09:32:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:16,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:16,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:16,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336478208] [2022-11-20 09:32:16,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336478208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:16,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:16,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:16,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955703450] [2022-11-20 09:32:16,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:16,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:16,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-20 09:32:16,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 423 transitions, 927 flow. Second operand has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:16,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:16,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-20 09:32:16,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:19,727 INFO L130 PetriNetUnfolder]: 541/9022 cut-off events. [2022-11-20 09:32:19,727 INFO L131 PetriNetUnfolder]: For 42/47 co-relation queries the response was YES. [2022-11-20 09:32:19,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9863 conditions, 9022 events. 541/9022 cut-off events. For 42/47 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 105610 event pairs, 75 based on Foata normal form. 0/7557 useless extension candidates. Maximal degree in co-relation 7891. Up to 292 conditions per place. [2022-11-20 09:32:19,931 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 28 selfloop transitions, 6 changer transitions 0/439 dead transitions. [2022-11-20 09:32:19,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 439 transitions, 1038 flow [2022-11-20 09:32:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2121 transitions. [2022-11-20 09:32:19,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302631578947368 [2022-11-20 09:32:19,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2121 transitions. [2022-11-20 09:32:19,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2121 transitions. [2022-11-20 09:32:19,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:19,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2121 transitions. [2022-11-20 09:32:19,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 424.2) internal successors, (2121), 5 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:19,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:19,947 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:19,948 INFO L175 Difference]: Start difference. First operand has 427 places, 423 transitions, 927 flow. Second operand 5 states and 2121 transitions. [2022-11-20 09:32:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 439 transitions, 1038 flow [2022-11-20 09:32:19,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 439 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:32:19,957 INFO L231 Difference]: Finished difference. Result has 429 places, 426 transitions, 949 flow [2022-11-20 09:32:19,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=949, PETRI_PLACES=429, PETRI_TRANSITIONS=426} [2022-11-20 09:32:19,959 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 18 predicate places. [2022-11-20 09:32:19,959 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 426 transitions, 949 flow [2022-11-20 09:32:19,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:19,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:19,960 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] [2022-11-20 09:32:19,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:32:19,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:19,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:19,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1382392958, now seen corresponding path program 1 times [2022-11-20 09:32:19,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:19,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818366425] [2022-11-20 09:32:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:20,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:20,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818366425] [2022-11-20 09:32:20,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818366425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:20,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:20,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:20,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196046062] [2022-11-20 09:32:20,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:20,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:32:20,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:20,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:32:20,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:20,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-20 09:32:20,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 426 transitions, 949 flow. Second operand has 5 states, 5 states have (on average 419.8) internal successors, (2099), 5 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:20,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-20 09:32:20,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:20,744 INFO L130 PetriNetUnfolder]: 61/1722 cut-off events. [2022-11-20 09:32:20,745 INFO L131 PetriNetUnfolder]: For 65/81 co-relation queries the response was YES. [2022-11-20 09:32:20,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 1722 events. 61/1722 cut-off events. For 65/81 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12818 event pairs, 0 based on Foata normal form. 0/1478 useless extension candidates. Maximal degree in co-relation 1752. Up to 53 conditions per place. [2022-11-20 09:32:20,801 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 23 selfloop transitions, 4 changer transitions 0/428 dead transitions. [2022-11-20 09:32:20,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 428 transitions, 1007 flow [2022-11-20 09:32:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2112 transitions. [2022-11-20 09:32:20,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9263157894736842 [2022-11-20 09:32:20,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2112 transitions. [2022-11-20 09:32:20,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2112 transitions. [2022-11-20 09:32:20,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:20,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2112 transitions. [2022-11-20 09:32:20,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 422.4) internal successors, (2112), 5 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,820 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,820 INFO L175 Difference]: Start difference. First operand has 429 places, 426 transitions, 949 flow. Second operand 5 states and 2112 transitions. [2022-11-20 09:32:20,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 428 transitions, 1007 flow [2022-11-20 09:32:20,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 428 transitions, 1003 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:20,831 INFO L231 Difference]: Finished difference. Result has 433 places, 426 transitions, 957 flow [2022-11-20 09:32:20,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=957, PETRI_PLACES=433, PETRI_TRANSITIONS=426} [2022-11-20 09:32:20,832 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 22 predicate places. [2022-11-20 09:32:20,832 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 426 transitions, 957 flow [2022-11-20 09:32:20,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 419.8) internal successors, (2099), 5 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:20,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:20,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:20,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:32:20,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash 348826265, now seen corresponding path program 1 times [2022-11-20 09:32:20,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:20,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856822777] [2022-11-20 09:32:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:20,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:21,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:21,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856822777] [2022-11-20 09:32:21,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856822777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:21,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093663266] [2022-11-20 09:32:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:21,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:21,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:21,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:32:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:21,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:32:21,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:21,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:21,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093663266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:21,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:21,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-20 09:32:21,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329031605] [2022-11-20 09:32:21,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:21,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:32:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:21,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:32:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:32:21,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 456 [2022-11-20 09:32:21,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 426 transitions, 957 flow. Second operand has 14 states, 14 states have (on average 415.85714285714283) internal successors, (5822), 14 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:21,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:21,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 456 [2022-11-20 09:32:21,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:21,926 INFO L130 PetriNetUnfolder]: 31/932 cut-off events. [2022-11-20 09:32:21,926 INFO L131 PetriNetUnfolder]: For 50/58 co-relation queries the response was YES. [2022-11-20 09:32:21,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 932 events. 31/932 cut-off events. For 50/58 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5151 event pairs, 0 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 932. Up to 25 conditions per place. [2022-11-20 09:32:21,952 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 29 selfloop transitions, 13 changer transitions 0/435 dead transitions. [2022-11-20 09:32:21,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 435 transitions, 1063 flow [2022-11-20 09:32:21,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:32:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:32:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4581 transitions. [2022-11-20 09:32:21,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9132775119617225 [2022-11-20 09:32:21,962 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4581 transitions. [2022-11-20 09:32:21,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4581 transitions. [2022-11-20 09:32:21,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:21,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4581 transitions. [2022-11-20 09:32:21,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 416.45454545454544) internal successors, (4581), 11 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:21,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 456.0) internal successors, (5472), 12 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:21,985 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 456.0) internal successors, (5472), 12 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:21,986 INFO L175 Difference]: Start difference. First operand has 433 places, 426 transitions, 957 flow. Second operand 11 states and 4581 transitions. [2022-11-20 09:32:21,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 435 transitions, 1063 flow [2022-11-20 09:32:21,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 435 transitions, 1055 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:32:21,995 INFO L231 Difference]: Finished difference. Result has 442 places, 427 transitions, 996 flow [2022-11-20 09:32:21,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=996, PETRI_PLACES=442, PETRI_TRANSITIONS=427} [2022-11-20 09:32:21,997 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 31 predicate places. [2022-11-20 09:32:21,997 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 427 transitions, 996 flow [2022-11-20 09:32:21,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 415.85714285714283) internal successors, (5822), 14 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:21,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:22,000 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:22,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 09:32:22,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:32:22,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:22,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash 260570313, now seen corresponding path program 2 times [2022-11-20 09:32:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:22,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131228595] [2022-11-20 09:32:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:32:22,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:22,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131228595] [2022-11-20 09:32:22,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131228595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:32:22,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582249485] [2022-11-20 09:32:22,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:22,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:22,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:22,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:32:22,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 09:32:22,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:22,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:22,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 09:32:22,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 09:32:22,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582249485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:22,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:32:22,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 09:32:22,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570694854] [2022-11-20 09:32:22,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:22,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:32:22,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:22,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:32:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:32:22,983 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 456 [2022-11-20 09:32:22,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 427 transitions, 996 flow. Second operand has 17 states, 17 states have (on average 416.94117647058823) internal successors, (7088), 17 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:22,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:22,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 456 [2022-11-20 09:32:22,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:23,500 INFO L130 PetriNetUnfolder]: 15/519 cut-off events. [2022-11-20 09:32:23,501 INFO L131 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2022-11-20 09:32:23,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 519 events. 15/519 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1860 event pairs, 0 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 612. Up to 9 conditions per place. [2022-11-20 09:32:23,513 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 21 selfloop transitions, 13 changer transitions 0/427 dead transitions. [2022-11-20 09:32:23,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 427 transitions, 1033 flow [2022-11-20 09:32:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:32:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 09:32:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6230 transitions. [2022-11-20 09:32:23,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9108187134502924 [2022-11-20 09:32:23,527 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6230 transitions. [2022-11-20 09:32:23,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6230 transitions. [2022-11-20 09:32:23,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:23,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6230 transitions. [2022-11-20 09:32:23,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 415.3333333333333) internal successors, (6230), 15 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:23,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 456.0) internal successors, (7296), 16 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:23,561 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 456.0) internal successors, (7296), 16 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:23,562 INFO L175 Difference]: Start difference. First operand has 442 places, 427 transitions, 996 flow. Second operand 15 states and 6230 transitions. [2022-11-20 09:32:23,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 427 transitions, 1033 flow [2022-11-20 09:32:23,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 427 transitions, 988 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-20 09:32:23,571 INFO L231 Difference]: Finished difference. Result has 437 places, 420 transitions, 934 flow [2022-11-20 09:32:23,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=934, PETRI_PLACES=437, PETRI_TRANSITIONS=420} [2022-11-20 09:32:23,574 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 26 predicate places. [2022-11-20 09:32:23,574 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 420 transitions, 934 flow [2022-11-20 09:32:23,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 416.94117647058823) internal successors, (7088), 17 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:23,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:23,577 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:23,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:23,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480f7993-eb8c-465a-b4ac-6fca597205e1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:23,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 852699193, now seen corresponding path program 2 times [2022-11-20 09:32:23,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128427241] [2022-11-20 09:32:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:23,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:23,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128427241] [2022-11-20 09:32:23,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128427241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:23,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:23,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:23,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274817960] [2022-11-20 09:32:23,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:23,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:23,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:23,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:23,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:32:23,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-20 09:32:23,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 420 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 398.1666666666667) internal successors, (2389), 6 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) [2022-11-20 09:32:23,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:23,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-20 09:32:23,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:25,226 INFO L130 PetriNetUnfolder]: 815/3840 cut-off events. [2022-11-20 09:32:25,226 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-20 09:32:25,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5855 conditions, 3840 events. 815/3840 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 35252 event pairs, 117 based on Foata normal form. 0/3348 useless extension candidates. Maximal degree in co-relation 5843. Up to 976 conditions per place. [2022-11-20 09:32:25,293 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 49 selfloop transitions, 5 changer transitions 0/435 dead transitions. [2022-11-20 09:32:25,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 435 transitions, 1080 flow [2022-11-20 09:32:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:32:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:32:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2431 transitions. [2022-11-20 09:32:25,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8885233918128655 [2022-11-20 09:32:25,299 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2431 transitions. [2022-11-20 09:32:25,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2431 transitions. [2022-11-20 09:32:25,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:25,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2431 transitions. [2022-11-20 09:32:25,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 405.1666666666667) internal successors, (2431), 6 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:25,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:25,312 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:25,312 INFO L175 Difference]: Start difference. First operand has 437 places, 420 transitions, 934 flow. Second operand 6 states and 2431 transitions. [2022-11-20 09:32:25,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 435 transitions, 1080 flow [2022-11-20 09:32:25,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 435 transitions, 1055 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-20 09:32:25,322 INFO L231 Difference]: Finished difference. Result has 429 places, 419 transitions, 917 flow [2022-11-20 09:32:25,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=917, PETRI_PLACES=429, PETRI_TRANSITIONS=419} [2022-11-20 09:32:25,327 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 18 predicate places. [2022-11-20 09:32:25,327 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 419 transitions, 917 flow [2022-11-20 09:32:25,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.1666666666667) internal successors, (2389), 6 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) [2022-11-20 09:32:25,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:25,342 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:25,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:32:25,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:25,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:25,343 INFO L85 PathProgramCache]: Analyzing trace with hash 663872338, now seen corresponding path program 1 times [2022-11-20 09:32:25,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:25,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919467599] [2022-11-20 09:32:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:25,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:25,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919467599] [2022-11-20 09:32:25,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919467599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:25,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:25,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192585453] [2022-11-20 09:32:25,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:25,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:25,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:25,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:25,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:25,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-20 09:32:25,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 419 transitions, 917 flow. Second operand has 4 states, 4 states have (on average 408.75) internal successors, (1635), 4 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:25,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:25,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-20 09:32:25,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:26,128 INFO L130 PetriNetUnfolder]: 165/1809 cut-off events. [2022-11-20 09:32:26,129 INFO L131 PetriNetUnfolder]: For 26/30 co-relation queries the response was YES. [2022-11-20 09:32:26,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 1809 events. 165/1809 cut-off events. For 26/30 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13722 event pairs, 48 based on Foata normal form. 0/1551 useless extension candidates. Maximal degree in co-relation 2333. Up to 140 conditions per place. [2022-11-20 09:32:26,181 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 37 selfloop transitions, 4 changer transitions 0/433 dead transitions. [2022-11-20 09:32:26,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 433 transitions, 1035 flow [2022-11-20 09:32:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:32:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1671 transitions. [2022-11-20 09:32:26,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9161184210526315 [2022-11-20 09:32:26,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1671 transitions. [2022-11-20 09:32:26,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1671 transitions. [2022-11-20 09:32:26,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:26,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1671 transitions. [2022-11-20 09:32:26,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.75) internal successors, (1671), 4 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:26,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:26,203 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:26,203 INFO L175 Difference]: Start difference. First operand has 429 places, 419 transitions, 917 flow. Second operand 4 states and 1671 transitions. [2022-11-20 09:32:26,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 433 transitions, 1035 flow [2022-11-20 09:32:26,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 1026 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:32:26,214 INFO L231 Difference]: Finished difference. Result has 430 places, 420 transitions, 932 flow [2022-11-20 09:32:26,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=932, PETRI_PLACES=430, PETRI_TRANSITIONS=420} [2022-11-20 09:32:26,216 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 19 predicate places. [2022-11-20 09:32:26,217 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 420 transitions, 932 flow [2022-11-20 09:32:26,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 408.75) internal successors, (1635), 4 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:26,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:26,218 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:26,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:32:26,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2007401092, now seen corresponding path program 1 times [2022-11-20 09:32:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:26,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377099252] [2022-11-20 09:32:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:26,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:26,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:26,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377099252] [2022-11-20 09:32:26,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377099252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:26,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:26,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:26,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643711467] [2022-11-20 09:32:26,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:26,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:26,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:26,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:26,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-20 09:32:26,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 420 transitions, 932 flow. Second operand has 4 states, 4 states have (on average 419.25) internal successors, (1677), 4 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:26,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:26,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-20 09:32:26,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:27,490 INFO L130 PetriNetUnfolder]: 186/1942 cut-off events. [2022-11-20 09:32:27,490 INFO L131 PetriNetUnfolder]: For 140/908 co-relation queries the response was YES. [2022-11-20 09:32:27,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1942 events. 186/1942 cut-off events. For 140/908 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 15527 event pairs, 21 based on Foata normal form. 0/1612 useless extension candidates. Maximal degree in co-relation 2341. Up to 175 conditions per place. [2022-11-20 09:32:27,587 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 27 selfloop transitions, 6 changer transitions 0/435 dead transitions. [2022-11-20 09:32:27,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 435 transitions, 1038 flow [2022-11-20 09:32:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2120 transitions. [2022-11-20 09:32:27,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9298245614035088 [2022-11-20 09:32:27,594 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2120 transitions. [2022-11-20 09:32:27,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2120 transitions. [2022-11-20 09:32:27,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:27,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2120 transitions. [2022-11-20 09:32:27,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,606 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,606 INFO L175 Difference]: Start difference. First operand has 430 places, 420 transitions, 932 flow. Second operand 5 states and 2120 transitions. [2022-11-20 09:32:27,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 435 transitions, 1038 flow [2022-11-20 09:32:27,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 435 transitions, 1038 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:32:27,616 INFO L231 Difference]: Finished difference. Result has 437 places, 423 transitions, 968 flow [2022-11-20 09:32:27,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=968, PETRI_PLACES=437, PETRI_TRANSITIONS=423} [2022-11-20 09:32:27,618 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 26 predicate places. [2022-11-20 09:32:27,619 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 423 transitions, 968 flow [2022-11-20 09:32:27,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.25) internal successors, (1677), 4 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:27,620 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:27,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:32:27,620 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash 511865328, now seen corresponding path program 1 times [2022-11-20 09:32:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:27,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788529435] [2022-11-20 09:32:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:27,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:27,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788529435] [2022-11-20 09:32:27,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788529435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:27,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:27,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:27,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988639144] [2022-11-20 09:32:27,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:27,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:27,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:27,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:27,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:32:27,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-20 09:32:27,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 423 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:27,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:27,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-20 09:32:27,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:31,468 INFO L130 PetriNetUnfolder]: 3406/13321 cut-off events. [2022-11-20 09:32:31,468 INFO L131 PetriNetUnfolder]: For 1708/1876 co-relation queries the response was YES. [2022-11-20 09:32:31,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18996 conditions, 13321 events. 3406/13321 cut-off events. For 1708/1876 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 169687 event pairs, 522 based on Foata normal form. 0/10437 useless extension candidates. Maximal degree in co-relation 18978. Up to 3754 conditions per place. [2022-11-20 09:32:31,711 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 48 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-20 09:32:31,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 437 transitions, 1109 flow [2022-11-20 09:32:31,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:32:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:32:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2430 transitions. [2022-11-20 09:32:31,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8881578947368421 [2022-11-20 09:32:31,717 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2430 transitions. [2022-11-20 09:32:31,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2430 transitions. [2022-11-20 09:32:31,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:31,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2430 transitions. [2022-11-20 09:32:31,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:31,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:31,730 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:31,730 INFO L175 Difference]: Start difference. First operand has 437 places, 423 transitions, 968 flow. Second operand 6 states and 2430 transitions. [2022-11-20 09:32:31,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 437 transitions, 1109 flow [2022-11-20 09:32:31,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 437 transitions, 1105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:31,742 INFO L231 Difference]: Finished difference. Result has 440 places, 422 transitions, 972 flow [2022-11-20 09:32:31,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=972, PETRI_PLACES=440, PETRI_TRANSITIONS=422} [2022-11-20 09:32:31,743 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 29 predicate places. [2022-11-20 09:32:31,743 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 422 transitions, 972 flow [2022-11-20 09:32:31,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:31,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:31,745 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:31,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:32:31,745 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:31,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1312042789, now seen corresponding path program 1 times [2022-11-20 09:32:31,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:31,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841732104] [2022-11-20 09:32:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:31,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:31,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841732104] [2022-11-20 09:32:31,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841732104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:31,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:31,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:31,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892927483] [2022-11-20 09:32:31,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:31,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-20 09:32:31,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 422 transitions, 972 flow. Second operand has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:31,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:31,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-20 09:32:31,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:33,343 INFO L130 PetriNetUnfolder]: 450/2802 cut-off events. [2022-11-20 09:32:33,343 INFO L131 PetriNetUnfolder]: For 410/1775 co-relation queries the response was YES. [2022-11-20 09:32:33,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 2802 events. 450/2802 cut-off events. For 410/1775 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 28045 event pairs, 168 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 3927. Up to 418 conditions per place. [2022-11-20 09:32:33,450 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 36 selfloop transitions, 4 changer transitions 0/435 dead transitions. [2022-11-20 09:32:33,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 435 transitions, 1085 flow [2022-11-20 09:32:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:32:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1670 transitions. [2022-11-20 09:32:33,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9155701754385965 [2022-11-20 09:32:33,461 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1670 transitions. [2022-11-20 09:32:33,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1670 transitions. [2022-11-20 09:32:33,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:33,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1670 transitions. [2022-11-20 09:32:33,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.5) internal successors, (1670), 4 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:33,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:33,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:33,472 INFO L175 Difference]: Start difference. First operand has 440 places, 422 transitions, 972 flow. Second operand 4 states and 1670 transitions. [2022-11-20 09:32:33,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 435 transitions, 1085 flow [2022-11-20 09:32:33,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 435 transitions, 1076 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:32:33,481 INFO L231 Difference]: Finished difference. Result has 441 places, 423 transitions, 987 flow [2022-11-20 09:32:33,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=441, PETRI_TRANSITIONS=423} [2022-11-20 09:32:33,483 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 30 predicate places. [2022-11-20 09:32:33,483 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 423 transitions, 987 flow [2022-11-20 09:32:33,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:33,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:33,484 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:33,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:32:33,485 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:33,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2127145670, now seen corresponding path program 1 times [2022-11-20 09:32:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:33,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013387652] [2022-11-20 09:32:33,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:33,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013387652] [2022-11-20 09:32:33,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013387652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:33,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:33,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:33,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668396011] [2022-11-20 09:32:33,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:33,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:33,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:33,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-20 09:32:33,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 423 transitions, 987 flow. Second operand has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:33,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:33,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-20 09:32:33,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:34,480 INFO L130 PetriNetUnfolder]: 164/2688 cut-off events. [2022-11-20 09:32:34,480 INFO L131 PetriNetUnfolder]: For 158/1065 co-relation queries the response was YES. [2022-11-20 09:32:34,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 2688 events. 164/2688 cut-off events. For 158/1065 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 23391 event pairs, 48 based on Foata normal form. 14/2377 useless extension candidates. Maximal degree in co-relation 3462. Up to 152 conditions per place. [2022-11-20 09:32:34,536 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 37 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-20 09:32:34,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 435 transitions, 1095 flow [2022-11-20 09:32:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:32:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1669 transitions. [2022-11-20 09:32:34,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150219298245614 [2022-11-20 09:32:34,541 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1669 transitions. [2022-11-20 09:32:34,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1669 transitions. [2022-11-20 09:32:34,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:34,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1669 transitions. [2022-11-20 09:32:34,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:34,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:34,549 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:34,549 INFO L175 Difference]: Start difference. First operand has 441 places, 423 transitions, 987 flow. Second operand 4 states and 1669 transitions. [2022-11-20 09:32:34,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 435 transitions, 1095 flow [2022-11-20 09:32:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 435 transitions, 1093 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:34,651 INFO L231 Difference]: Finished difference. Result has 443 places, 422 transitions, 985 flow [2022-11-20 09:32:34,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=985, PETRI_PLACES=443, PETRI_TRANSITIONS=422} [2022-11-20 09:32:34,653 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 32 predicate places. [2022-11-20 09:32:34,653 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 422 transitions, 985 flow [2022-11-20 09:32:34,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:34,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:34,654 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:34,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:32:34,654 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:34,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1517005178, now seen corresponding path program 1 times [2022-11-20 09:32:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:34,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181876264] [2022-11-20 09:32:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:34,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181876264] [2022-11-20 09:32:34,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181876264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:34,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:34,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779973007] [2022-11-20 09:32:34,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:34,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:32:34,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-20 09:32:34,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 422 transitions, 985 flow. Second operand has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 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) [2022-11-20 09:32:34,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:34,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-20 09:32:34,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:37,113 INFO L130 PetriNetUnfolder]: 1475/8722 cut-off events. [2022-11-20 09:32:37,113 INFO L131 PetriNetUnfolder]: For 377/408 co-relation queries the response was YES. [2022-11-20 09:32:37,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13223 conditions, 8722 events. 1475/8722 cut-off events. For 377/408 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 99176 event pairs, 180 based on Foata normal form. 4/7850 useless extension candidates. Maximal degree in co-relation 13203. Up to 1930 conditions per place. [2022-11-20 09:32:37,230 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 47 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-20 09:32:37,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 437 transitions, 1127 flow [2022-11-20 09:32:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:32:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:32:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2429 transitions. [2022-11-20 09:32:37,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877923976608187 [2022-11-20 09:32:37,239 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2429 transitions. [2022-11-20 09:32:37,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2429 transitions. [2022-11-20 09:32:37,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:37,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2429 transitions. [2022-11-20 09:32:37,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.8333333333333) internal successors, (2429), 6 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:37,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:37,251 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:37,251 INFO L175 Difference]: Start difference. First operand has 443 places, 422 transitions, 985 flow. Second operand 6 states and 2429 transitions. [2022-11-20 09:32:37,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 437 transitions, 1127 flow [2022-11-20 09:32:37,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 437 transitions, 1122 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:32:37,265 INFO L231 Difference]: Finished difference. Result has 445 places, 421 transitions, 988 flow [2022-11-20 09:32:37,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=445, PETRI_TRANSITIONS=421} [2022-11-20 09:32:37,266 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 34 predicate places. [2022-11-20 09:32:37,266 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 421 transitions, 988 flow [2022-11-20 09:32:37,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 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) [2022-11-20 09:32:37,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:37,268 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:37,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:32:37,268 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1951262108, now seen corresponding path program 1 times [2022-11-20 09:32:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869811417] [2022-11-20 09:32:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:37,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:37,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:37,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869811417] [2022-11-20 09:32:37,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869811417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:37,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:37,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:37,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445471258] [2022-11-20 09:32:37,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:37,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:37,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:37,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:37,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:37,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-20 09:32:37,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 421 transitions, 988 flow. Second operand has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:37,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:37,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-20 09:32:37,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:40,037 INFO L130 PetriNetUnfolder]: 1065/9095 cut-off events. [2022-11-20 09:32:40,037 INFO L131 PetriNetUnfolder]: For 816/1261 co-relation queries the response was YES. [2022-11-20 09:32:40,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 9095 events. 1065/9095 cut-off events. For 816/1261 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 112888 event pairs, 420 based on Foata normal form. 3/7122 useless extension candidates. Maximal degree in co-relation 10817. Up to 940 conditions per place. [2022-11-20 09:32:40,134 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 26 selfloop transitions, 6 changer transitions 0/435 dead transitions. [2022-11-20 09:32:40,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 435 transitions, 1086 flow [2022-11-20 09:32:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:32:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 09:32:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2119 transitions. [2022-11-20 09:32:40,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9293859649122806 [2022-11-20 09:32:40,139 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2119 transitions. [2022-11-20 09:32:40,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2119 transitions. [2022-11-20 09:32:40,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:40,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2119 transitions. [2022-11-20 09:32:40,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 423.8) internal successors, (2119), 5 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:40,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:40,150 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:40,151 INFO L175 Difference]: Start difference. First operand has 445 places, 421 transitions, 988 flow. Second operand 5 states and 2119 transitions. [2022-11-20 09:32:40,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 435 transitions, 1086 flow [2022-11-20 09:32:40,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 435 transitions, 1077 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:32:40,161 INFO L231 Difference]: Finished difference. Result has 448 places, 424 transitions, 1015 flow [2022-11-20 09:32:40,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1015, PETRI_PLACES=448, PETRI_TRANSITIONS=424} [2022-11-20 09:32:40,162 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 37 predicate places. [2022-11-20 09:32:40,163 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 424 transitions, 1015 flow [2022-11-20 09:32:40,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:40,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:40,164 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:40,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:32:40,164 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:40,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:40,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1428403829, now seen corresponding path program 1 times [2022-11-20 09:32:40,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:40,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862972271] [2022-11-20 09:32:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:40,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:40,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:40,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862972271] [2022-11-20 09:32:40,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862972271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:40,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:40,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495589728] [2022-11-20 09:32:40,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:40,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-20 09:32:40,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 424 transitions, 1015 flow. Second operand has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:40,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:40,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-20 09:32:40,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:41,656 INFO L130 PetriNetUnfolder]: 205/3307 cut-off events. [2022-11-20 09:32:41,656 INFO L131 PetriNetUnfolder]: For 130/1885 co-relation queries the response was YES. [2022-11-20 09:32:41,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 3307 events. 205/3307 cut-off events. For 130/1885 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 31144 event pairs, 72 based on Foata normal form. 14/2916 useless extension candidates. Maximal degree in co-relation 4280. Up to 226 conditions per place. [2022-11-20 09:32:41,765 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 34 selfloop transitions, 3 changer transitions 0/436 dead transitions. [2022-11-20 09:32:41,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 436 transitions, 1119 flow [2022-11-20 09:32:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:32:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1666 transitions. [2022-11-20 09:32:41,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9133771929824561 [2022-11-20 09:32:41,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1666 transitions. [2022-11-20 09:32:41,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1666 transitions. [2022-11-20 09:32:41,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:41,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1666 transitions. [2022-11-20 09:32:41,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 416.5) internal successors, (1666), 4 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:41,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:41,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:41,777 INFO L175 Difference]: Start difference. First operand has 448 places, 424 transitions, 1015 flow. Second operand 4 states and 1666 transitions. [2022-11-20 09:32:41,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 436 transitions, 1119 flow [2022-11-20 09:32:41,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 436 transitions, 1113 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:32:41,788 INFO L231 Difference]: Finished difference. Result has 449 places, 424 transitions, 1018 flow [2022-11-20 09:32:41,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1018, PETRI_PLACES=449, PETRI_TRANSITIONS=424} [2022-11-20 09:32:41,790 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 38 predicate places. [2022-11-20 09:32:41,790 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 424 transitions, 1018 flow [2022-11-20 09:32:41,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:41,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:41,791 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:41,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:32:41,792 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1323626960, now seen corresponding path program 1 times [2022-11-20 09:32:41,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:41,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888731214] [2022-11-20 09:32:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:41,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:41,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:41,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888731214] [2022-11-20 09:32:41,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888731214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:41,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:41,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944245225] [2022-11-20 09:32:41,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:41,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:41,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:41,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:32:41,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-20 09:32:41,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 424 transitions, 1018 flow. Second operand has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 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) [2022-11-20 09:32:41,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:41,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-20 09:32:41,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:50,924 INFO L130 PetriNetUnfolder]: 8531/36059 cut-off events. [2022-11-20 09:32:50,924 INFO L131 PetriNetUnfolder]: For 5408/5479 co-relation queries the response was YES. [2022-11-20 09:32:51,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51991 conditions, 36059 events. 8531/36059 cut-off events. For 5408/5479 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 535651 event pairs, 1224 based on Foata normal form. 0/28577 useless extension candidates. Maximal degree in co-relation 51967. Up to 10146 conditions per place. [2022-11-20 09:32:51,402 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 47 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-20 09:32:51,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 437 transitions, 1152 flow [2022-11-20 09:32:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:32:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:32:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2429 transitions. [2022-11-20 09:32:51,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877923976608187 [2022-11-20 09:32:51,407 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2429 transitions. [2022-11-20 09:32:51,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2429 transitions. [2022-11-20 09:32:51,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:51,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2429 transitions. [2022-11-20 09:32:51,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.8333333333333) internal successors, (2429), 6 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,417 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,417 INFO L175 Difference]: Start difference. First operand has 449 places, 424 transitions, 1018 flow. Second operand 6 states and 2429 transitions. [2022-11-20 09:32:51,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 437 transitions, 1152 flow [2022-11-20 09:32:51,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 437 transitions, 1150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:51,438 INFO L231 Difference]: Finished difference. Result has 452 places, 423 transitions, 1024 flow [2022-11-20 09:32:51,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=452, PETRI_TRANSITIONS=423} [2022-11-20 09:32:51,440 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 41 predicate places. [2022-11-20 09:32:51,440 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 423 transitions, 1024 flow [2022-11-20 09:32:51,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 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) [2022-11-20 09:32:51,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:51,441 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 09:32:51,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:32:51,441 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1917238523, now seen corresponding path program 1 times [2022-11-20 09:32:51,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:51,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719193140] [2022-11-20 09:32:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:51,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:51,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719193140] [2022-11-20 09:32:51,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719193140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:51,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:51,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:51,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560566454] [2022-11-20 09:32:51,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:51,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:51,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:51,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-20 09:32:51,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 423 transitions, 1024 flow. Second operand has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:51,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:51,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-20 09:32:51,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:55,070 INFO L130 PetriNetUnfolder]: 3371/13376 cut-off events. [2022-11-20 09:32:55,070 INFO L131 PetriNetUnfolder]: For 3324/5234 co-relation queries the response was YES. [2022-11-20 09:32:55,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20258 conditions, 13376 events. 3371/13376 cut-off events. For 3324/5234 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 197064 event pairs, 1344 based on Foata normal form. 4/9124 useless extension candidates. Maximal degree in co-relation 20234. Up to 3052 conditions per place. [2022-11-20 09:32:55,337 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 35 selfloop transitions, 4 changer transitions 0/435 dead transitions. [2022-11-20 09:32:55,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 435 transitions, 1130 flow [2022-11-20 09:32:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:32:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1669 transitions. [2022-11-20 09:32:55,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150219298245614 [2022-11-20 09:32:55,341 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1669 transitions. [2022-11-20 09:32:55,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1669 transitions. [2022-11-20 09:32:55,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:55,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1669 transitions. [2022-11-20 09:32:55,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:55,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:55,350 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:55,350 INFO L175 Difference]: Start difference. First operand has 452 places, 423 transitions, 1024 flow. Second operand 4 states and 1669 transitions. [2022-11-20 09:32:55,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 435 transitions, 1130 flow [2022-11-20 09:32:55,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 435 transitions, 1121 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:32:55,364 INFO L231 Difference]: Finished difference. Result has 453 places, 424 transitions, 1039 flow [2022-11-20 09:32:55,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1039, PETRI_PLACES=453, PETRI_TRANSITIONS=424} [2022-11-20 09:32:55,366 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 42 predicate places. [2022-11-20 09:32:55,366 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 424 transitions, 1039 flow [2022-11-20 09:32:55,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:55,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:55,367 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1] [2022-11-20 09:32:55,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:32:55,368 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:55,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash -371140157, now seen corresponding path program 1 times [2022-11-20 09:32:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:55,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803846356] [2022-11-20 09:32:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:55,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:55,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:55,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803846356] [2022-11-20 09:32:55,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803846356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:55,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:55,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:32:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927062249] [2022-11-20 09:32:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:55,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:32:55,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:32:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:32:55,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-20 09:32:55,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 424 transitions, 1039 flow. Second operand has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:55,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:55,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-20 09:32:55,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:32:58,043 INFO L130 PetriNetUnfolder]: 551/4105 cut-off events. [2022-11-20 09:32:58,043 INFO L131 PetriNetUnfolder]: For 790/2815 co-relation queries the response was YES. [2022-11-20 09:32:58,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 4105 events. 551/4105 cut-off events. For 790/2815 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 45458 event pairs, 216 based on Foata normal form. 20/3320 useless extension candidates. Maximal degree in co-relation 5824. Up to 500 conditions per place. [2022-11-20 09:32:58,206 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 36 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-20 09:32:58,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 435 transitions, 1142 flow [2022-11-20 09:32:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:32:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:32:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1668 transitions. [2022-11-20 09:32:58,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9144736842105263 [2022-11-20 09:32:58,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1668 transitions. [2022-11-20 09:32:58,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1668 transitions. [2022-11-20 09:32:58,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:32:58,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1668 transitions. [2022-11-20 09:32:58,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:58,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:58,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:58,214 INFO L175 Difference]: Start difference. First operand has 453 places, 424 transitions, 1039 flow. Second operand 4 states and 1668 transitions. [2022-11-20 09:32:58,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 435 transitions, 1142 flow [2022-11-20 09:32:58,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 435 transitions, 1140 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 09:32:58,224 INFO L231 Difference]: Finished difference. Result has 455 places, 423 transitions, 1037 flow [2022-11-20 09:32:58,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1037, PETRI_PLACES=455, PETRI_TRANSITIONS=423} [2022-11-20 09:32:58,225 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 44 predicate places. [2022-11-20 09:32:58,225 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 423 transitions, 1037 flow [2022-11-20 09:32:58,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:58,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:32:58,226 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2022-11-20 09:32:58,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 09:32:58,226 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:32:58,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:58,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1382206219, now seen corresponding path program 1 times [2022-11-20 09:32:58,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:58,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228667951] [2022-11-20 09:32:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:58,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:32:58,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228667951] [2022-11-20 09:32:58,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228667951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:58,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:58,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:32:58,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677039059] [2022-11-20 09:32:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:58,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:32:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:32:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:32:58,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 456 [2022-11-20 09:32:58,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 423 transitions, 1037 flow. Second operand has 8 states, 8 states have (on average 393.25) internal successors, (3146), 8 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:58,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:32:58,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 456 [2022-11-20 09:32:58,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:02,091 INFO L130 PetriNetUnfolder]: 1323/9623 cut-off events. [2022-11-20 09:33:02,091 INFO L131 PetriNetUnfolder]: For 778/19120 co-relation queries the response was YES. [2022-11-20 09:33:02,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13617 conditions, 9623 events. 1323/9623 cut-off events. For 778/19120 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 113258 event pairs, 172 based on Foata normal form. 18/8509 useless extension candidates. Maximal degree in co-relation 13591. Up to 1470 conditions per place. [2022-11-20 09:33:02,636 INFO L137 encePairwiseOnDemand]: 446/456 looper letters, 64 selfloop transitions, 9 changer transitions 0/455 dead transitions. [2022-11-20 09:33:02,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 455 transitions, 1261 flow [2022-11-20 09:33:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:33:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:33:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3202 transitions. [2022-11-20 09:33:02,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777412280701754 [2022-11-20 09:33:02,639 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3202 transitions. [2022-11-20 09:33:02,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3202 transitions. [2022-11-20 09:33:02,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:02,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3202 transitions. [2022-11-20 09:33:02,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 400.25) internal successors, (3202), 8 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:02,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:02,649 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:02,649 INFO L175 Difference]: Start difference. First operand has 455 places, 423 transitions, 1037 flow. Second operand 8 states and 3202 transitions. [2022-11-20 09:33:02,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 455 transitions, 1261 flow [2022-11-20 09:33:02,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 455 transitions, 1256 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:33:02,661 INFO L231 Difference]: Finished difference. Result has 462 places, 424 transitions, 1062 flow [2022-11-20 09:33:02,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1062, PETRI_PLACES=462, PETRI_TRANSITIONS=424} [2022-11-20 09:33:02,662 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 51 predicate places. [2022-11-20 09:33:02,663 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 424 transitions, 1062 flow [2022-11-20 09:33:02,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 393.25) internal successors, (3146), 8 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:02,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:02,664 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2022-11-20 09:33:02,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 09:33:02,664 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:33:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:02,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1379558269, now seen corresponding path program 1 times [2022-11-20 09:33:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:02,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391647238] [2022-11-20 09:33:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:02,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:33:02,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:02,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391647238] [2022-11-20 09:33:02,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391647238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:02,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:02,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:33:02,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827786267] [2022-11-20 09:33:02,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:02,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:33:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:02,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:33:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:33:02,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-20 09:33:02,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 424 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 398.6666666666667) internal successors, (2392), 6 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:02,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:02,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-20 09:33:02,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:33:14,129 INFO L130 PetriNetUnfolder]: 8234/40457 cut-off events. [2022-11-20 09:33:14,129 INFO L131 PetriNetUnfolder]: For 5235/5519 co-relation queries the response was YES. [2022-11-20 09:33:14,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57544 conditions, 40457 events. 8234/40457 cut-off events. For 5235/5519 co-relation queries the response was YES. Maximal size of possible extension queue 3074. Compared 630024 event pairs, 1062 based on Foata normal form. 0/33355 useless extension candidates. Maximal degree in co-relation 57516. Up to 9788 conditions per place. [2022-11-20 09:33:14,993 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 46 selfloop transitions, 5 changer transitions 0/438 dead transitions. [2022-11-20 09:33:14,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 438 transitions, 1199 flow [2022-11-20 09:33:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:33:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:33:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2428 transitions. [2022-11-20 09:33:14,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874269005847953 [2022-11-20 09:33:14,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2428 transitions. [2022-11-20 09:33:14,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2428 transitions. [2022-11-20 09:33:14,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:33:14,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2428 transitions. [2022-11-20 09:33:14,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.6666666666667) internal successors, (2428), 6 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:15,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:15,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:15,003 INFO L175 Difference]: Start difference. First operand has 462 places, 424 transitions, 1062 flow. Second operand 6 states and 2428 transitions. [2022-11-20 09:33:15,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 438 transitions, 1199 flow [2022-11-20 09:33:15,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 438 transitions, 1190 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:33:15,075 INFO L231 Difference]: Finished difference. Result has 462 places, 423 transitions, 1061 flow [2022-11-20 09:33:15,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1061, PETRI_PLACES=462, PETRI_TRANSITIONS=423} [2022-11-20 09:33:15,076 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 51 predicate places. [2022-11-20 09:33:15,077 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 423 transitions, 1061 flow [2022-11-20 09:33:15,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.6666666666667) internal successors, (2392), 6 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:15,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:33:15,078 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1] [2022-11-20 09:33:15,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 09:33:15,078 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-20 09:33:15,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash -101279007, now seen corresponding path program 1 times [2022-11-20 09:33:15,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:15,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608550767] [2022-11-20 09:33:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:33:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 09:33:15,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:15,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608550767] [2022-11-20 09:33:15,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608550767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:33:15,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:33:15,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:33:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816126637] [2022-11-20 09:33:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:33:15,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:33:15,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:33:15,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:33:15,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 456 [2022-11-20 09:33:15,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 423 transitions, 1061 flow. Second operand has 8 states, 8 states have (on average 393.375) internal successors, (3147), 8 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:15,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:33:15,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 456 [2022-11-20 09:33:15,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand