./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:34:13,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:34:13,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:34:13,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:34:13,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:34:13,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:34:13,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:34:13,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:34:13,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:34:13,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:34:13,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:34:13,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:34:13,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:34:13,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:34:13,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:34:13,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:34:13,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:34:13,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:34:13,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:34:13,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:34:13,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:34:13,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:34:13,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:34:13,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:34:13,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:34:13,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:34:13,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:34:13,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:34:13,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:34:13,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:34:13,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:34:13,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:34:13,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:34:13,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:34:13,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:34:13,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:34:13,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:34:13,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:34:13,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:34:13,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:34:13,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:34:13,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:34:13,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:34:13,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:34:13,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:34:13,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:34:13,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:34:13,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:34:13,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:34:13,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:34:13,793 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:34:13,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:34:13,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:34:13,795 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:34:13,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:34:13,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:34:13,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:34:13,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:34:13,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:34:13,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:34:13,797 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:34:13,797 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:34:13,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:34:13,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:34:13,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:34:13,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:34:13,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:34:13,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:34:13,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:34:13,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:34:13,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:34:13,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:34:13,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:34:13,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:34:13,801 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:34:13,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:34:13,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:34:13,802 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_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-21 16:34:14,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:34:14,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:34:14,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:34:14,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:34:14,225 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:34:14,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-21 16:34:17,413 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:34:17,688 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:34:17,689 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-21 16:34:17,700 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/data/cd18b3371/1494df39ea024c589fc0d52f7c8dbb30/FLAG8dae8e657 [2022-11-21 16:34:17,722 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/data/cd18b3371/1494df39ea024c589fc0d52f7c8dbb30 [2022-11-21 16:34:17,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:34:17,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:34:17,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:34:17,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:34:17,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:34:17,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:34:17" (1/1) ... [2022-11-21 16:34:17,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f785c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:17, skipping insertion in model container [2022-11-21 16:34:17,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:34:17" (1/1) ... [2022-11-21 16:34:17,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:34:17,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:34:17,981 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_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-21 16:34:17,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:34:18,000 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:34:18,030 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_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-21 16:34:18,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:34:18,049 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:34:18,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18 WrapperNode [2022-11-21 16:34:18,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:34:18,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:34:18,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:34:18,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:34:18,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,097 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 184 [2022-11-21 16:34:18,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:34:18,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:34:18,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:34:18,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:34:18,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,131 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:34:18,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:34:18,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:34:18,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:34:18,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (1/1) ... [2022-11-21 16:34:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:34:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:34:18,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:34:18,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:34:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:34:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:34:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:34:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:34:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:34:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:34:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:34:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:34:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:34:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:34:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 16:34:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 16:34:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:34:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-21 16:34:18,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-21 16:34:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:34:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:34:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:34:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:34:18,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:34:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:34:18,245 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:34:18,438 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:34:18,440 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:34:19,078 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:34:19,270 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:34:19,270 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-21 16:34:19,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:34:19 BoogieIcfgContainer [2022-11-21 16:34:19,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:34:19,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:34:19,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:34:19,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:34:19,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:34:17" (1/3) ... [2022-11-21 16:34:19,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c67b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:34:19, skipping insertion in model container [2022-11-21 16:34:19,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:34:18" (2/3) ... [2022-11-21 16:34:19,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c67b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:34:19, skipping insertion in model container [2022-11-21 16:34:19,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:34:19" (3/3) ... [2022-11-21 16:34:19,284 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-11-21 16:34:19,294 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:34:19,307 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:34:19,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-21 16:34:19,308 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:34:19,567 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-21 16:34:19,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 220 transitions, 480 flow [2022-11-21 16:34:19,801 INFO L130 PetriNetUnfolder]: 14/215 cut-off events. [2022-11-21 16:34:19,801 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-21 16:34:19,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 215 events. 14/215 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 236 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 177. Up to 2 conditions per place. [2022-11-21 16:34:19,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 220 transitions, 480 flow [2022-11-21 16:34:19,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 190 transitions, 407 flow [2022-11-21 16:34:19,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:34:19,842 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;@63321d80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:34:19,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-21 16:34:19,860 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2022-11-21 16:34:19,861 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:34:19,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:19,862 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:19,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-21 16:34:19,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2134018356, now seen corresponding path program 1 times [2022-11-21 16:34:19,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:19,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094010333] [2022-11-21 16:34:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:19,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:20,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:20,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094010333] [2022-11-21 16:34:20,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094010333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:20,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:20,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:34:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737374001] [2022-11-21 16:34:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:20,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:34:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:20,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:34:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:34:20,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-11-21 16:34:20,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 190 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:20,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:20,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-11-21 16:34:20,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:22,611 INFO L130 PetriNetUnfolder]: 3425/7651 cut-off events. [2022-11-21 16:34:22,612 INFO L131 PetriNetUnfolder]: For 1034/1034 co-relation queries the response was YES. [2022-11-21 16:34:22,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12744 conditions, 7651 events. 3425/7651 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 65227 event pairs, 2272 based on Foata normal form. 1256/6236 useless extension candidates. Maximal degree in co-relation 6021. Up to 2172 conditions per place. [2022-11-21 16:34:22,829 INFO L137 encePairwiseOnDemand]: 203/220 looper letters, 54 selfloop transitions, 4 changer transitions 3/206 dead transitions. [2022-11-21 16:34:22,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 206 transitions, 582 flow [2022-11-21 16:34:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:34:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:34:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2022-11-21 16:34:22,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8672727272727273 [2022-11-21 16:34:22,856 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2022-11-21 16:34:22,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2022-11-21 16:34:22,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:22,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2022-11-21 16:34:22,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,884 INFO L175 Difference]: Start difference. First operand has 193 places, 190 transitions, 407 flow. Second operand 5 states and 954 transitions. [2022-11-21 16:34:22,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 206 transitions, 582 flow [2022-11-21 16:34:22,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 206 transitions, 548 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-21 16:34:22,897 INFO L231 Difference]: Finished difference. Result has 188 places, 179 transitions, 392 flow [2022-11-21 16:34:22,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=188, PETRI_TRANSITIONS=179} [2022-11-21 16:34:22,903 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, -5 predicate places. [2022-11-21 16:34:22,904 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 179 transitions, 392 flow [2022-11-21 16:34:22,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:22,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:22,905 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:22,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:34:22,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-21 16:34:22,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1652211588, now seen corresponding path program 1 times [2022-11-21 16:34:22,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:22,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032192383] [2022-11-21 16:34:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:22,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:23,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:23,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032192383] [2022-11-21 16:34:23,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032192383] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:34:23,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421797031] [2022-11-21 16:34:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:23,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:23,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:34:23,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:34:23,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:34:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:23,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:34:23,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:34:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:23,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:34:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:23,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421797031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:34:23,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:34:23,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:34:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560019347] [2022-11-21 16:34:23,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:34:23,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:34:23,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:34:23,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:34:23,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-11-21 16:34:23,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 179 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 177.66666666666666) internal successors, (2132), 12 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:23,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:23,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-11-21 16:34:23,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:27,905 INFO L130 PetriNetUnfolder]: 8561/19038 cut-off events. [2022-11-21 16:34:27,906 INFO L131 PetriNetUnfolder]: For 671/671 co-relation queries the response was YES. [2022-11-21 16:34:28,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30918 conditions, 19038 events. 8561/19038 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 178896 event pairs, 5680 based on Foata normal form. 3/12391 useless extension candidates. Maximal degree in co-relation 24684. Up to 2167 conditions per place. [2022-11-21 16:34:28,193 INFO L137 encePairwiseOnDemand]: 213/220 looper letters, 123 selfloop transitions, 18 changer transitions 0/286 dead transitions. [2022-11-21 16:34:28,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 286 transitions, 950 flow [2022-11-21 16:34:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:34:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:34:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3294 transitions. [2022-11-21 16:34:28,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8318181818181818 [2022-11-21 16:34:28,202 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3294 transitions. [2022-11-21 16:34:28,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3294 transitions. [2022-11-21 16:34:28,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:28,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3294 transitions. [2022-11-21 16:34:28,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:28,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:28,355 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 220.0) internal successors, (4180), 19 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:28,355 INFO L175 Difference]: Start difference. First operand has 188 places, 179 transitions, 392 flow. Second operand 18 states and 3294 transitions. [2022-11-21 16:34:28,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 286 transitions, 950 flow [2022-11-21 16:34:28,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 286 transitions, 948 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:34:28,363 INFO L231 Difference]: Finished difference. Result has 205 places, 191 transitions, 496 flow [2022-11-21 16:34:28,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=496, PETRI_PLACES=205, PETRI_TRANSITIONS=191} [2022-11-21 16:34:28,365 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 12 predicate places. [2022-11-21 16:34:28,365 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 191 transitions, 496 flow [2022-11-21 16:34:28,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 177.66666666666666) internal successors, (2132), 12 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:28,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:28,368 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:28,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:34:28,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:28,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-21 16:34:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -321047837, now seen corresponding path program 1 times [2022-11-21 16:34:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:28,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647172878] [2022-11-21 16:34:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:28,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:28,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647172878] [2022-11-21 16:34:28,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647172878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:34:28,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018715440] [2022-11-21 16:34:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:28,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:28,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:34:28,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:34:28,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:34:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:28,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:34:28,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:34:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:28,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:34:28,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018715440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:28,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:34:28,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:34:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744837848] [2022-11-21 16:34:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:28,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:34:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:28,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:34:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:34:28,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 220 [2022-11-21 16:34:28,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 191 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:28,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:28,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 220 [2022-11-21 16:34:28,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:32,485 INFO L130 PetriNetUnfolder]: 8561/19034 cut-off events. [2022-11-21 16:34:32,485 INFO L131 PetriNetUnfolder]: For 707/707 co-relation queries the response was YES. [2022-11-21 16:34:32,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30936 conditions, 19034 events. 8561/19034 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 179093 event pairs, 5680 based on Foata normal form. 4/12376 useless extension candidates. Maximal degree in co-relation 24734. Up to 8652 conditions per place. [2022-11-21 16:34:32,700 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 55 selfloop transitions, 11 changer transitions 0/211 dead transitions. [2022-11-21 16:34:32,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 211 transitions, 661 flow [2022-11-21 16:34:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:34:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:34:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2022-11-21 16:34:32,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8331168831168831 [2022-11-21 16:34:32,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2022-11-21 16:34:32,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2022-11-21 16:34:32,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:32,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2022-11-21 16:34:32,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:32,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 220.0) internal successors, (1760), 8 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:32,714 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 220.0) internal successors, (1760), 8 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:32,714 INFO L175 Difference]: Start difference. First operand has 205 places, 191 transitions, 496 flow. Second operand 7 states and 1283 transitions. [2022-11-21 16:34:32,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 211 transitions, 661 flow [2022-11-21 16:34:32,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 211 transitions, 629 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-21 16:34:32,723 INFO L231 Difference]: Finished difference. Result has 201 places, 187 transitions, 459 flow [2022-11-21 16:34:32,724 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=201, PETRI_TRANSITIONS=187} [2022-11-21 16:34:32,726 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 8 predicate places. [2022-11-21 16:34:32,726 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 187 transitions, 459 flow [2022-11-21 16:34:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:32,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:32,727 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:34:32,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 16:34:32,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb50e7cb-876e-4e67-9f01-3f2416ebdf51/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:34:32,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-21 16:34:32,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash 989448040, now seen corresponding path program 1 times [2022-11-21 16:34:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:32,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294115394] [2022-11-21 16:34:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:33,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:33,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294115394] [2022-11-21 16:34:33,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294115394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:33,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:33,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:34:33,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353495149] [2022-11-21 16:34:33,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:33,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:34:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:34:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:34:33,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 220 [2022-11-21 16:34:33,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 187 transitions, 459 flow. Second operand has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:33,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:33,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 220 [2022-11-21 16:34:33,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:34:48,049 INFO L130 PetriNetUnfolder]: 49856/93909 cut-off events. [2022-11-21 16:34:48,050 INFO L131 PetriNetUnfolder]: For 1342/1447 co-relation queries the response was YES. [2022-11-21 16:34:48,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163428 conditions, 93909 events. 49856/93909 cut-off events. For 1342/1447 co-relation queries the response was YES. Maximal size of possible extension queue 2001. Compared 963891 event pairs, 26915 based on Foata normal form. 5/59554 useless extension candidates. Maximal degree in co-relation 130734. Up to 37096 conditions per place. [2022-11-21 16:34:49,408 INFO L137 encePairwiseOnDemand]: 214/220 looper letters, 73 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2022-11-21 16:34:49,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 235 transitions, 728 flow [2022-11-21 16:34:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:34:49,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:34:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 964 transitions. [2022-11-21 16:34:49,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763636363636363 [2022-11-21 16:34:49,413 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 964 transitions. [2022-11-21 16:34:49,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 964 transitions. [2022-11-21 16:34:49,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:34:49,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 964 transitions. [2022-11-21 16:34:49,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.8) internal successors, (964), 5 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:49,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:49,426 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:49,428 INFO L175 Difference]: Start difference. First operand has 201 places, 187 transitions, 459 flow. Second operand 5 states and 964 transitions. [2022-11-21 16:34:49,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 235 transitions, 728 flow [2022-11-21 16:34:49,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 235 transitions, 714 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:34:49,436 INFO L231 Difference]: Finished difference. Result has 203 places, 190 transitions, 475 flow [2022-11-21 16:34:49,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=475, PETRI_PLACES=203, PETRI_TRANSITIONS=190} [2022-11-21 16:34:49,437 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 10 predicate places. [2022-11-21 16:34:49,438 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 190 transitions, 475 flow [2022-11-21 16:34:49,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:49,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:34:49,439 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] [2022-11-21 16:34:49,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:34:49,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-21 16:34:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:34:49,440 INFO L85 PathProgramCache]: Analyzing trace with hash 277436669, now seen corresponding path program 1 times [2022-11-21 16:34:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:34:49,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501309358] [2022-11-21 16:34:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:34:49,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:34:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:34:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:34:49,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:34:49,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501309358] [2022-11-21 16:34:49,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501309358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:34:49,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:34:49,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:34:49,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91959203] [2022-11-21 16:34:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:34:49,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:34:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:34:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:34:49,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:34:49,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 220 [2022-11-21 16:34:49,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 190 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:34:49,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:34:49,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 220 [2022-11-21 16:34:49,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand