./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/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_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/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_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- 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 10:56:23,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:56:23,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:56:23,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:56:23,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:56:23,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:56:23,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:56:23,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:56:23,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:56:23,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:56:23,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:56:23,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:56:23,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:56:23,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:56:23,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:56:23,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:56:23,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:56:23,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:56:23,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:56:23,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:56:23,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:56:23,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:56:23,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:56:23,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:56:23,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:56:23,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:56:23,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:56:23,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:56:23,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:56:23,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:56:23,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:56:23,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:56:23,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:56:23,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:56:23,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:56:23,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:56:23,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:56:23,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:56:23,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:56:23,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:56:23,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:56:23,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:56:23,697 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:56:23,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:56:23,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:56:23,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:56:23,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:56:23,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:56:23,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:56:23,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:56:23,701 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:56:23,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:56:23,702 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:56:23,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:56:23,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:56:23,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:56:23,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:56:23,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:56:23,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:56:23,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:56:23,704 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:56:23,705 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:56:23,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:56:23,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:56:23,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:56:23,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:56:23,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:56:23,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:56:23,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:23,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:56:23,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:56:23,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:56:23,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:56:23,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:56:23,710 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:56:23,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:56:23,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:56:23,711 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_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-11-20 10:56:24,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:56:24,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:56:24,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:56:24,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:56:24,148 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:56:24,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-11-20 10:56:27,770 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:56:28,128 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:56:28,129 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-11-20 10:56:28,158 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/data/fed675745/7d5852ebfb8145aeb3b55df26bc43438/FLAG492de9a1c [2022-11-20 10:56:28,177 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/data/fed675745/7d5852ebfb8145aeb3b55df26bc43438 [2022-11-20 10:56:28,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:56:28,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:56:28,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:28,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:56:28,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:56:28,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:28" (1/1) ... [2022-11-20 10:56:28,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364a0a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:28, skipping insertion in model container [2022-11-20 10:56:28,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:28" (1/1) ... [2022-11-20 10:56:28,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:56:28,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:56:28,849 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_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-11-20 10:56:28,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:28,895 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:56:28,931 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_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-11-20 10:56:28,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:29,004 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:56:29,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29 WrapperNode [2022-11-20 10:56:29,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:29,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:29,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:56:29,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:56:29,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,078 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 216 [2022-11-20 10:56:29,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:29,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:56:29,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:56:29,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:56:29,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:56:29,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:56:29,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:56:29,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:56:29,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (1/1) ... [2022-11-20 10:56:29,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:29,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:29,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:56:29,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:56:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:56:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:56:29,201 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 10:56:29,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 10:56:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:56:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:56:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 10:56:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 10:56:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:56:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:56:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:56:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:56:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:56:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:56:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:56:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:56:29,208 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 10:56:29,489 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:56:29,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:56:29,965 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:56:29,978 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:56:29,978 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-20 10:56:29,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:29 BoogieIcfgContainer [2022-11-20 10:56:29,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:56:29,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:56:29,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:56:29,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:56:29,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:56:28" (1/3) ... [2022-11-20 10:56:29,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfc0471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:29, skipping insertion in model container [2022-11-20 10:56:29,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:29" (2/3) ... [2022-11-20 10:56:30,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfc0471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:30, skipping insertion in model container [2022-11-20 10:56:30,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:29" (3/3) ... [2022-11-20 10:56:30,014 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-11-20 10:56:30,022 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:56:30,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:56:30,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 10:56:30,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:56:30,241 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:56:30,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 243 transitions, 508 flow [2022-11-20 10:56:30,543 INFO L130 PetriNetUnfolder]: 52/464 cut-off events. [2022-11-20 10:56:30,543 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2022-11-20 10:56:30,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 464 events. 52/464 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1895 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-20 10:56:30,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 243 transitions, 508 flow [2022-11-20 10:56:30,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 243 transitions, 508 flow [2022-11-20 10:56:30,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:56:30,603 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;@6d327f43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:56:30,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 10:56:30,622 INFO L130 PetriNetUnfolder]: 4/79 cut-off events. [2022-11-20 10:56:30,623 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:56:30,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:30,624 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] [2022-11-20 10:56:30,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:56:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:30,631 INFO L85 PathProgramCache]: Analyzing trace with hash 320986800, now seen corresponding path program 1 times [2022-11-20 10:56:30,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:30,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199591340] [2022-11-20 10:56:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:30,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:31,254 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 10:56:31,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:31,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199591340] [2022-11-20 10:56:31,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199591340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:31,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:31,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:31,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506634387] [2022-11-20 10:56:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:31,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:31,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:31,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:31,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 243 [2022-11-20 10:56:31,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 243 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 10:56:31,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:31,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 243 [2022-11-20 10:56:31,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:31,516 INFO L130 PetriNetUnfolder]: 9/315 cut-off events. [2022-11-20 10:56:31,517 INFO L131 PetriNetUnfolder]: For 27/61 co-relation queries the response was YES. [2022-11-20 10:56:31,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 315 events. 9/315 cut-off events. For 27/61 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 915 event pairs, 0 based on Foata normal form. 48/329 useless extension candidates. Maximal degree in co-relation 209. Up to 15 conditions per place. [2022-11-20 10:56:31,522 INFO L137 encePairwiseOnDemand]: 220/243 looper letters, 14 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-20 10:56:31,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 226 transitions, 510 flow [2022-11-20 10:56:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:56:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1078 transitions. [2022-11-20 10:56:31,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872427983539095 [2022-11-20 10:56:31,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1078 transitions. [2022-11-20 10:56:31,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1078 transitions. [2022-11-20 10:56:31,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:31,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1078 transitions. [2022-11-20 10:56:31,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 215.6) internal successors, (1078), 5 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states 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 10:56:31,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 10:56:31,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 10:56:31,585 INFO L175 Difference]: Start difference. First operand has 225 places, 243 transitions, 508 flow. Second operand 5 states and 1078 transitions. [2022-11-20 10:56:31,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 226 transitions, 510 flow [2022-11-20 10:56:31,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 226 transitions, 510 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:56:31,603 INFO L231 Difference]: Finished difference. Result has 227 places, 224 transitions, 482 flow [2022-11-20 10:56:31,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=227, PETRI_TRANSITIONS=224} [2022-11-20 10:56:31,619 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 2 predicate places. [2022-11-20 10:56:31,620 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 224 transitions, 482 flow [2022-11-20 10:56:31,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.75) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 10:56:31,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:31,622 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:31,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:56:31,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:56:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1554260085, now seen corresponding path program 1 times [2022-11-20 10:56:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:31,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197786150] [2022-11-20 10:56:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:31,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:56:31,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:56:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:56:31,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:56:31,819 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:56:31,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-20 10:56:31,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-20 10:56:31,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-20 10:56:31,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-20 10:56:31,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-20 10:56:31,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-20 10:56:31,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-20 10:56:31,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-20 10:56:31,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-20 10:56:31,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-20 10:56:31,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-20 10:56:31,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-20 10:56:31,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-20 10:56:31,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 18 remaining) [2022-11-20 10:56:31,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-20 10:56:31,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-20 10:56:31,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-20 10:56:31,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-20 10:56:31,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:56:31,848 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 10:56:31,851 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:56:31,853 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:56:32,017 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-20 10:56:32,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 370 transitions, 788 flow [2022-11-20 10:56:32,519 INFO L130 PetriNetUnfolder]: 191/1413 cut-off events. [2022-11-20 10:56:32,519 INFO L131 PetriNetUnfolder]: For 72/95 co-relation queries the response was YES. [2022-11-20 10:56:32,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 1413 events. 191/1413 cut-off events. For 72/95 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9097 event pairs, 2 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 873. Up to 32 conditions per place. [2022-11-20 10:56:32,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 370 transitions, 788 flow [2022-11-20 10:56:32,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 370 transitions, 788 flow [2022-11-20 10:56:32,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:56:32,577 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;@6d327f43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:56:32,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 10:56:32,593 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2022-11-20 10:56:32,593 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:56:32,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:32,594 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] [2022-11-20 10:56:32,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 10:56:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash 802288665, now seen corresponding path program 1 times [2022-11-20 10:56:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:32,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119596127] [2022-11-20 10:56:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:32,827 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 10:56:32,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:32,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119596127] [2022-11-20 10:56:32,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119596127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:32,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:32,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915247168] [2022-11-20 10:56:32,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:32,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:32,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:32,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:32,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:32,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-20 10:56:32,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 370 transitions, 788 flow. Second operand has 4 states, 4 states have (on average 317.75) internal successors, (1271), 4 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 10:56:32,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:32,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-20 10:56:32,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:33,363 INFO L130 PetriNetUnfolder]: 66/1085 cut-off events. [2022-11-20 10:56:33,363 INFO L131 PetriNetUnfolder]: For 245/480 co-relation queries the response was YES. [2022-11-20 10:56:33,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 1085 events. 66/1085 cut-off events. For 245/480 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6700 event pairs, 2 based on Foata normal form. 406/1342 useless extension candidates. Maximal degree in co-relation 807. Up to 85 conditions per place. [2022-11-20 10:56:33,393 INFO L137 encePairwiseOnDemand]: 335/370 looper letters, 27 selfloop transitions, 4 changer transitions 0/347 dead transitions. [2022-11-20 10:56:33,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 347 transitions, 804 flow [2022-11-20 10:56:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:33,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:56:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1643 transitions. [2022-11-20 10:56:33,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8881081081081081 [2022-11-20 10:56:33,399 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1643 transitions. [2022-11-20 10:56:33,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1643 transitions. [2022-11-20 10:56:33,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:33,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1643 transitions. [2022-11-20 10:56:33,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 328.6) internal successors, (1643), 5 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states 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 10:56:33,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 10:56:33,412 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 10:56:33,412 INFO L175 Difference]: Start difference. First operand has 337 places, 370 transitions, 788 flow. Second operand 5 states and 1643 transitions. [2022-11-20 10:56:33,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 347 transitions, 804 flow [2022-11-20 10:56:33,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 347 transitions, 804 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:56:33,431 INFO L231 Difference]: Finished difference. Result has 342 places, 343 transitions, 760 flow [2022-11-20 10:56:33,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=760, PETRI_PLACES=342, PETRI_TRANSITIONS=343} [2022-11-20 10:56:33,433 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 5 predicate places. [2022-11-20 10:56:33,433 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 343 transitions, 760 flow [2022-11-20 10:56:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.75) internal successors, (1271), 4 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states 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 10:56:33,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:33,435 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:33,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:56:33,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 10:56:33,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:33,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1357017596, now seen corresponding path program 1 times [2022-11-20 10:56:33,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:33,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023229242] [2022-11-20 10:56:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:33,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:56:33,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:33,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023229242] [2022-11-20 10:56:33,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023229242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:33,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:33,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:33,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454544680] [2022-11-20 10:56:33,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:33,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:33,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:33,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:33,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:33,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-20 10:56:33,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 343 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states 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 10:56:33,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:33,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-20 10:56:33,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:34,030 INFO L130 PetriNetUnfolder]: 66/1084 cut-off events. [2022-11-20 10:56:34,031 INFO L131 PetriNetUnfolder]: For 251/476 co-relation queries the response was YES. [2022-11-20 10:56:34,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1084 events. 66/1084 cut-off events. For 251/476 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6640 event pairs, 2 based on Foata normal form. 13/952 useless extension candidates. Maximal degree in co-relation 1194. Up to 74 conditions per place. [2022-11-20 10:56:34,060 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 19 selfloop transitions, 8 changer transitions 0/343 dead transitions. [2022-11-20 10:56:34,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 343 transitions, 812 flow [2022-11-20 10:56:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:56:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1605 transitions. [2022-11-20 10:56:34,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8675675675675676 [2022-11-20 10:56:34,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1605 transitions. [2022-11-20 10:56:34,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1605 transitions. [2022-11-20 10:56:34,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:34,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1605 transitions. [2022-11-20 10:56:34,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states 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 10:56:34,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 10:56:34,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 370.0) internal successors, (2220), 6 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states 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 10:56:34,144 INFO L175 Difference]: Start difference. First operand has 342 places, 343 transitions, 760 flow. Second operand 5 states and 1605 transitions. [2022-11-20 10:56:34,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 343 transitions, 812 flow [2022-11-20 10:56:34,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 343 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:56:34,154 INFO L231 Difference]: Finished difference. Result has 345 places, 343 transitions, 778 flow [2022-11-20 10:56:34,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=778, PETRI_PLACES=345, PETRI_TRANSITIONS=343} [2022-11-20 10:56:34,158 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 8 predicate places. [2022-11-20 10:56:34,158 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 343 transitions, 778 flow [2022-11-20 10:56:34,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states 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 10:56:34,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:34,168 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:34,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:56:34,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 10:56:34,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash 882128243, now seen corresponding path program 1 times [2022-11-20 10:56:34,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:34,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695977412] [2022-11-20 10:56:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:34,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:34,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:34,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695977412] [2022-11-20 10:56:34,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695977412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:34,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320541029] [2022-11-20 10:56:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:34,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:34,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:34,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:34,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:56:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:34,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:56:34,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:34,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:34,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320541029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:34,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:56:34,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 10:56:34,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013040236] [2022-11-20 10:56:34,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:34,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:34,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:34,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:56:34,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-20 10:56:34,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 343 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 319.2) internal successors, (1596), 5 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 10:56:34,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:34,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-20 10:56:34,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:35,222 INFO L130 PetriNetUnfolder]: 66/1083 cut-off events. [2022-11-20 10:56:35,223 INFO L131 PetriNetUnfolder]: For 258/473 co-relation queries the response was YES. [2022-11-20 10:56:35,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 1083 events. 66/1083 cut-off events. For 258/473 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6708 event pairs, 2 based on Foata normal form. 5/943 useless extension candidates. Maximal degree in co-relation 823. Up to 81 conditions per place. [2022-11-20 10:56:35,261 INFO L137 encePairwiseOnDemand]: 366/370 looper letters, 21 selfloop transitions, 5 changer transitions 0/342 dead transitions. [2022-11-20 10:56:35,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 342 transitions, 826 flow [2022-11-20 10:56:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:56:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1287 transitions. [2022-11-20 10:56:35,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695945945945946 [2022-11-20 10:56:35,267 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1287 transitions. [2022-11-20 10:56:35,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1287 transitions. [2022-11-20 10:56:35,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:35,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1287 transitions. [2022-11-20 10:56:35,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states 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 10:56:35,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states 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 10:56:35,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states 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 10:56:35,280 INFO L175 Difference]: Start difference. First operand has 345 places, 343 transitions, 778 flow. Second operand 4 states and 1287 transitions. [2022-11-20 10:56:35,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 342 transitions, 826 flow [2022-11-20 10:56:35,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 342 transitions, 814 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:35,295 INFO L231 Difference]: Finished difference. Result has 344 places, 342 transitions, 772 flow [2022-11-20 10:56:35,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=772, PETRI_PLACES=344, PETRI_TRANSITIONS=342} [2022-11-20 10:56:35,298 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, 7 predicate places. [2022-11-20 10:56:35,298 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 342 transitions, 772 flow [2022-11-20 10:56:35,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 319.2) internal successors, (1596), 5 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states 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 10:56:35,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:35,300 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] [2022-11-20 10:56:35,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:35,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:35,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 10:56:35,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:35,509 INFO L85 PathProgramCache]: Analyzing trace with hash -284714683, now seen corresponding path program 1 times [2022-11-20 10:56:35,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:35,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093024250] [2022-11-20 10:56:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:35,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:35,653 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 10:56:35,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:35,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093024250] [2022-11-20 10:56:35,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093024250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:35,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963821733] [2022-11-20 10:56:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:35,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:35,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:35,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:35,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:56:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:35,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:56:35,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:35,903 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 10:56:35,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:35,960 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 10:56:35,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963821733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:35,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:56:35,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 10:56:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193710991] [2022-11-20 10:56:35,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:35,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:35,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:35,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:35,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 370 [2022-11-20 10:56:35,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 342 transitions, 772 flow. Second operand has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states 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 10:56:35,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:35,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 370 [2022-11-20 10:56:35,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:36,078 INFO L130 PetriNetUnfolder]: 0/131 cut-off events. [2022-11-20 10:56:36,079 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-20 10:56:36,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 131 events. 0/131 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-11-20 10:56:36,079 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 13 selfloop transitions, 7 changer transitions 0/125 dead transitions. [2022-11-20 10:56:36,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 125 transitions, 342 flow [2022-11-20 10:56:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:56:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:56:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2866 transitions. [2022-11-20 10:56:36,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606606606606607 [2022-11-20 10:56:36,086 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2866 transitions. [2022-11-20 10:56:36,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2866 transitions. [2022-11-20 10:56:36,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:36,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2866 transitions. [2022-11-20 10:56:36,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 318.44444444444446) internal successors, (2866), 9 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states 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 10:56:36,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 370.0) internal successors, (3700), 10 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states 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 10:56:36,102 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 370.0) internal successors, (3700), 10 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states 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 10:56:36,102 INFO L175 Difference]: Start difference. First operand has 344 places, 342 transitions, 772 flow. Second operand 9 states and 2866 transitions. [2022-11-20 10:56:36,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 125 transitions, 342 flow [2022-11-20 10:56:36,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 125 transitions, 330 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:36,105 INFO L231 Difference]: Finished difference. Result has 139 places, 120 transitions, 292 flow [2022-11-20 10:56:36,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=292, PETRI_PLACES=139, PETRI_TRANSITIONS=120} [2022-11-20 10:56:36,106 INFO L288 CegarLoopForPetriNet]: 337 programPoint places, -198 predicate places. [2022-11-20 10:56:36,106 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 120 transitions, 292 flow [2022-11-20 10:56:36,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states 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 10:56:36,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:36,108 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:36,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:36,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:56:36,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 10:56:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 595653698, now seen corresponding path program 1 times [2022-11-20 10:56:36,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203183604] [2022-11-20 10:56:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:56:36,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:56:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:56:36,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:56:36,404 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:56:36,405 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-20 10:56:36,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-11-20 10:56:36,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-11-20 10:56:36,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-11-20 10:56:36,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-11-20 10:56:36,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-11-20 10:56:36,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-11-20 10:56:36,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-11-20 10:56:36,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-11-20 10:56:36,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-11-20 10:56:36,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-11-20 10:56:36,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-11-20 10:56:36,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-11-20 10:56:36,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2022-11-20 10:56:36,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-11-20 10:56:36,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-11-20 10:56:36,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-11-20 10:56:36,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-11-20 10:56:36,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-11-20 10:56:36,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-11-20 10:56:36,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-11-20 10:56:36,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-11-20 10:56:36,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:56:36,413 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 10:56:36,414 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:56:36,414 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 10:56:36,539 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-20 10:56:36,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 497 transitions, 1072 flow [2022-11-20 10:56:38,172 INFO L130 PetriNetUnfolder]: 664/4036 cut-off events. [2022-11-20 10:56:38,173 INFO L131 PetriNetUnfolder]: For 419/462 co-relation queries the response was YES. [2022-11-20 10:56:38,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 4036 events. 664/4036 cut-off events. For 419/462 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 32329 event pairs, 52 based on Foata normal form. 0/3225 useless extension candidates. Maximal degree in co-relation 2570. Up to 192 conditions per place. [2022-11-20 10:56:38,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 449 places, 497 transitions, 1072 flow [2022-11-20 10:56:38,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 497 transitions, 1072 flow [2022-11-20 10:56:38,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:56:38,322 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;@6d327f43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:56:38,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 10:56:38,335 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-11-20 10:56:38,335 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:56:38,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:38,336 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] [2022-11-20 10:56:38,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 10:56:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1271074177, now seen corresponding path program 1 times [2022-11-20 10:56:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:38,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947255195] [2022-11-20 10:56:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:38,456 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 10:56:38,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:38,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947255195] [2022-11-20 10:56:38,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947255195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:38,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:38,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:38,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225109027] [2022-11-20 10:56:38,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:38,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:38,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:38,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:38,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-20 10:56:38,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 497 transitions, 1072 flow. Second operand has 4 states, 4 states have (on average 425.75) internal successors, (1703), 4 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states 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 10:56:38,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:38,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-20 10:56:38,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:40,327 INFO L130 PetriNetUnfolder]: 359/3429 cut-off events. [2022-11-20 10:56:40,327 INFO L131 PetriNetUnfolder]: For 1259/1778 co-relation queries the response was YES. [2022-11-20 10:56:40,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 3429 events. 359/3429 cut-off events. For 1259/1778 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28473 event pairs, 36 based on Foata normal form. 2426/5343 useless extension candidates. Maximal degree in co-relation 2538. Up to 421 conditions per place. [2022-11-20 10:56:40,438 INFO L137 encePairwiseOnDemand]: 450/497 looper letters, 33 selfloop transitions, 4 changer transitions 0/461 dead transitions. [2022-11-20 10:56:40,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 461 transitions, 1074 flow [2022-11-20 10:56:40,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:56:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2201 transitions. [2022-11-20 10:56:40,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-20 10:56:40,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2201 transitions. [2022-11-20 10:56:40,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2201 transitions. [2022-11-20 10:56:40,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:40,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2201 transitions. [2022-11-20 10:56:40,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 440.2) internal successors, (2201), 5 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states 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 10:56:40,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states 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 10:56:40,461 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states 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 10:56:40,461 INFO L175 Difference]: Start difference. First operand has 449 places, 497 transitions, 1072 flow. Second operand 5 states and 2201 transitions. [2022-11-20 10:56:40,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 461 transitions, 1074 flow [2022-11-20 10:56:40,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 461 transitions, 1074 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:56:40,474 INFO L231 Difference]: Finished difference. Result has 453 places, 457 transitions, 1018 flow [2022-11-20 10:56:40,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1018, PETRI_PLACES=453, PETRI_TRANSITIONS=457} [2022-11-20 10:56:40,477 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 4 predicate places. [2022-11-20 10:56:40,477 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 457 transitions, 1018 flow [2022-11-20 10:56:40,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 425.75) internal successors, (1703), 4 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states 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 10:56:40,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:40,479 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:40,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:56:40,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 10:56:40,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2138647899, now seen corresponding path program 1 times [2022-11-20 10:56:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:40,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445875396] [2022-11-20 10:56:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:40,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:56:40,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:40,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445875396] [2022-11-20 10:56:40,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445875396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:40,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:40,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:40,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755633301] [2022-11-20 10:56:40,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:40,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:40,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:40,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-20 10:56:40,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 457 transitions, 1018 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states 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 10:56:40,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:40,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-20 10:56:40,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:42,480 INFO L130 PetriNetUnfolder]: 359/3427 cut-off events. [2022-11-20 10:56:42,480 INFO L131 PetriNetUnfolder]: For 1266/1768 co-relation queries the response was YES. [2022-11-20 10:56:42,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 3427 events. 359/3427 cut-off events. For 1266/1768 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28617 event pairs, 36 based on Foata normal form. 20/2942 useless extension candidates. Maximal degree in co-relation 4224. Up to 401 conditions per place. [2022-11-20 10:56:42,609 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 25 selfloop transitions, 8 changer transitions 0/457 dead transitions. [2022-11-20 10:56:42,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 457 transitions, 1082 flow [2022-11-20 10:56:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:56:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2151 transitions. [2022-11-20 10:56:42,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8655935613682093 [2022-11-20 10:56:42,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2151 transitions. [2022-11-20 10:56:42,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2151 transitions. [2022-11-20 10:56:42,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:42,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2151 transitions. [2022-11-20 10:56:42,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 430.2) internal successors, (2151), 5 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states 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 10:56:42,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states 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 10:56:42,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 497.0) internal successors, (2982), 6 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states 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 10:56:42,629 INFO L175 Difference]: Start difference. First operand has 453 places, 457 transitions, 1018 flow. Second operand 5 states and 2151 transitions. [2022-11-20 10:56:42,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 457 transitions, 1082 flow [2022-11-20 10:56:42,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 457 transitions, 1080 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:56:42,639 INFO L231 Difference]: Finished difference. Result has 456 places, 457 transitions, 1036 flow [2022-11-20 10:56:42,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1036, PETRI_PLACES=456, PETRI_TRANSITIONS=457} [2022-11-20 10:56:42,641 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 7 predicate places. [2022-11-20 10:56:42,641 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 457 transitions, 1036 flow [2022-11-20 10:56:42,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states 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 10:56:42,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:42,643 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:42,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:56:42,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 10:56:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1873574175, now seen corresponding path program 1 times [2022-11-20 10:56:42,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:42,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068038192] [2022-11-20 10:56:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:42,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068038192] [2022-11-20 10:56:42,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068038192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:42,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935402688] [2022-11-20 10:56:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:42,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:42,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:56:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:43,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:56:43,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:43,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:43,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935402688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:43,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:56:43,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 10:56:43,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855156841] [2022-11-20 10:56:43,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:43,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:56:43,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-20 10:56:43,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 457 transitions, 1036 flow. Second operand has 5 states, 5 states have (on average 427.2) internal successors, (2136), 5 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states 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 10:56:43,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:43,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-20 10:56:43,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:44,713 INFO L130 PetriNetUnfolder]: 359/3425 cut-off events. [2022-11-20 10:56:44,714 INFO L131 PetriNetUnfolder]: For 1277/1762 co-relation queries the response was YES. [2022-11-20 10:56:44,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 3425 events. 359/3425 cut-off events. For 1277/1762 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28453 event pairs, 36 based on Foata normal form. 8/2928 useless extension candidates. Maximal degree in co-relation 2559. Up to 411 conditions per place. [2022-11-20 10:56:44,810 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 27 selfloop transitions, 5 changer transitions 0/456 dead transitions. [2022-11-20 10:56:44,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 456 transitions, 1096 flow [2022-11-20 10:56:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:56:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:56:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1725 transitions. [2022-11-20 10:56:44,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8677062374245473 [2022-11-20 10:56:44,814 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1725 transitions. [2022-11-20 10:56:44,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1725 transitions. [2022-11-20 10:56:44,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:44,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1725 transitions. [2022-11-20 10:56:44,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 10:56:44,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states 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 10:56:44,823 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states 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 10:56:44,824 INFO L175 Difference]: Start difference. First operand has 456 places, 457 transitions, 1036 flow. Second operand 4 states and 1725 transitions. [2022-11-20 10:56:44,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 456 transitions, 1096 flow [2022-11-20 10:56:44,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 456 transitions, 1084 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:44,833 INFO L231 Difference]: Finished difference. Result has 455 places, 456 transitions, 1030 flow [2022-11-20 10:56:44,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1030, PETRI_PLACES=455, PETRI_TRANSITIONS=456} [2022-11-20 10:56:44,835 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 6 predicate places. [2022-11-20 10:56:44,835 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 456 transitions, 1030 flow [2022-11-20 10:56:44,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 427.2) internal successors, (2136), 5 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states 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 10:56:44,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:44,836 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] [2022-11-20 10:56:44,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:45,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:45,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 10:56:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1166115622, now seen corresponding path program 1 times [2022-11-20 10:56:45,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:45,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859449047] [2022-11-20 10:56:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:45,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:45,159 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 10:56:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:45,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859449047] [2022-11-20 10:56:45,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859449047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:45,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853802387] [2022-11-20 10:56:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:45,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:45,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:45,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:56:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:45,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:56:45,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:45,398 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 10:56:45,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:45,438 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 10:56:45,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853802387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:45,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:56:45,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 10:56:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516880850] [2022-11-20 10:56:45,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:45,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:56:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:56:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:56:45,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 497 [2022-11-20 10:56:45,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 456 transitions, 1030 flow. Second operand has 10 states, 10 states have (on average 427.0) internal successors, (4270), 10 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states 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 10:56:45,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:45,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 497 [2022-11-20 10:56:45,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:56:46,485 INFO L130 PetriNetUnfolder]: 333/2823 cut-off events. [2022-11-20 10:56:46,485 INFO L131 PetriNetUnfolder]: For 1233/1407 co-relation queries the response was YES. [2022-11-20 10:56:46,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 2823 events. 333/2823 cut-off events. For 1233/1407 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 21365 event pairs, 76 based on Foata normal form. 8/2410 useless extension candidates. Maximal degree in co-relation 3535. Up to 392 conditions per place. [2022-11-20 10:56:46,583 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 34 selfloop transitions, 9 changer transitions 0/467 dead transitions. [2022-11-20 10:56:46,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 467 transitions, 1154 flow [2022-11-20 10:56:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:56:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:56:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3861 transitions. [2022-11-20 10:56:46,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8631790744466801 [2022-11-20 10:56:46,592 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3861 transitions. [2022-11-20 10:56:46,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3861 transitions. [2022-11-20 10:56:46,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:56:46,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3861 transitions. [2022-11-20 10:56:46,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 429.0) internal successors, (3861), 9 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states 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 10:56:46,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 497.0) internal successors, (4970), 10 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states 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 10:56:46,613 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 497.0) internal successors, (4970), 10 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states 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 10:56:46,613 INFO L175 Difference]: Start difference. First operand has 455 places, 456 transitions, 1030 flow. Second operand 9 states and 3861 transitions. [2022-11-20 10:56:46,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 467 transitions, 1154 flow [2022-11-20 10:56:46,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 467 transitions, 1140 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:56:46,624 INFO L231 Difference]: Finished difference. Result has 464 places, 460 transitions, 1076 flow [2022-11-20 10:56:46,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1076, PETRI_PLACES=464, PETRI_TRANSITIONS=460} [2022-11-20 10:56:46,626 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 15 predicate places. [2022-11-20 10:56:46,626 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 460 transitions, 1076 flow [2022-11-20 10:56:46,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 427.0) internal successors, (4270), 10 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states 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 10:56:46,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:46,629 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-11-20 10:56:46,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:46,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:46,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 10:56:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:46,852 INFO L85 PathProgramCache]: Analyzing trace with hash 353239425, now seen corresponding path program 1 times [2022-11-20 10:56:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:46,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108018215] [2022-11-20 10:56:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:46,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:56:46,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:56:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:56:46,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:56:46,947 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:56:46,947 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-20 10:56:46,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-20 10:56:46,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-20 10:56:46,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-20 10:56:46,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-20 10:56:46,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-20 10:56:46,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-20 10:56:46,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-20 10:56:46,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-20 10:56:46,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-20 10:56:46,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-20 10:56:46,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-20 10:56:46,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-20 10:56:46,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-20 10:56:46,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-20 10:56:46,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-20 10:56:46,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-20 10:56:46,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-20 10:56:46,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-20 10:56:46,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-20 10:56:46,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-20 10:56:46,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-20 10:56:46,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-20 10:56:46,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-20 10:56:46,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-20 10:56:46,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-20 10:56:46,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:56:46,953 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 10:56:46,954 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:56:46,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 10:56:47,120 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-20 10:56:47,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 624 transitions, 1360 flow [2022-11-20 10:56:53,745 INFO L130 PetriNetUnfolder]: 2659/12977 cut-off events. [2022-11-20 10:56:53,745 INFO L131 PetriNetUnfolder]: For 2144/2211 co-relation queries the response was YES. [2022-11-20 10:56:54,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15142 conditions, 12977 events. 2659/12977 cut-off events. For 2144/2211 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 127255 event pairs, 626 based on Foata normal form. 0/10438 useless extension candidates. Maximal degree in co-relation 8080. Up to 1024 conditions per place. [2022-11-20 10:56:54,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 561 places, 624 transitions, 1360 flow [2022-11-20 10:56:54,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 561 places, 624 transitions, 1360 flow [2022-11-20 10:56:54,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:56:54,536 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;@6d327f43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:56:54,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-20 10:56:54,544 INFO L130 PetriNetUnfolder]: 4/83 cut-off events. [2022-11-20 10:56:54,544 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:56:54,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:56:54,544 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] [2022-11-20 10:56:54,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 10:56:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:54,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1727343336, now seen corresponding path program 1 times [2022-11-20 10:56:54,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:54,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585053198] [2022-11-20 10:56:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:54,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:54,629 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 10:56:54,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:54,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585053198] [2022-11-20 10:56:54,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585053198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:54,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:54,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523150632] [2022-11-20 10:56:54,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:54,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:54,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-20 10:56:54,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 624 transitions, 1360 flow. Second operand has 4 states, 4 states have (on average 533.75) internal successors, (2135), 4 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states 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 10:56:54,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:56:54,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-20 10:56:54,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:00,208 INFO L130 PetriNetUnfolder]: 1860/11775 cut-off events. [2022-11-20 10:57:00,208 INFO L131 PetriNetUnfolder]: For 6492/7733 co-relation queries the response was YES. [2022-11-20 10:57:00,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16033 conditions, 11775 events. 1860/11775 cut-off events. For 6492/7733 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 121992 event pairs, 324 based on Foata normal form. 12814/22820 useless extension candidates. Maximal degree in co-relation 8512. Up to 2103 conditions per place. [2022-11-20 10:57:00,803 INFO L137 encePairwiseOnDemand]: 565/624 looper letters, 39 selfloop transitions, 4 changer transitions 0/575 dead transitions. [2022-11-20 10:57:00,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 575 transitions, 1348 flow [2022-11-20 10:57:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:57:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:57:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2759 transitions. [2022-11-20 10:57:00,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8842948717948718 [2022-11-20 10:57:00,830 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2759 transitions. [2022-11-20 10:57:00,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2759 transitions. [2022-11-20 10:57:00,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:00,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2759 transitions. [2022-11-20 10:57:00,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 551.8) internal successors, (2759), 5 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states 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 10:57:00,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states 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 10:57:00,854 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states 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 10:57:00,855 INFO L175 Difference]: Start difference. First operand has 561 places, 624 transitions, 1360 flow. Second operand 5 states and 2759 transitions. [2022-11-20 10:57:00,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 575 transitions, 1348 flow [2022-11-20 10:57:00,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 575 transitions, 1348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:57:00,871 INFO L231 Difference]: Finished difference. Result has 564 places, 571 transitions, 1280 flow [2022-11-20 10:57:00,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=564, PETRI_TRANSITIONS=571} [2022-11-20 10:57:00,875 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 3 predicate places. [2022-11-20 10:57:00,875 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 571 transitions, 1280 flow [2022-11-20 10:57:00,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 533.75) internal successors, (2135), 4 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states 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 10:57:00,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:00,877 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:00,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:57:00,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 10:57:00,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1457689595, now seen corresponding path program 1 times [2022-11-20 10:57:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:00,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855412030] [2022-11-20 10:57:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:00,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:57:00,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:00,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855412030] [2022-11-20 10:57:00,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855412030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:00,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:00,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:00,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752093395] [2022-11-20 10:57:00,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:00,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:57:00,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:57:00,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:00,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-20 10:57:00,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 571 transitions, 1280 flow. Second operand has 4 states, 4 states have (on average 535.75) internal successors, (2143), 4 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states 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 10:57:00,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:00,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-20 10:57:00,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:07,024 INFO L130 PetriNetUnfolder]: 1860/11772 cut-off events. [2022-11-20 10:57:07,024 INFO L131 PetriNetUnfolder]: For 6495/7700 co-relation queries the response was YES. [2022-11-20 10:57:07,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16054 conditions, 11772 events. 1860/11772 cut-off events. For 6495/7700 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 121546 event pairs, 324 based on Foata normal form. 27/10040 useless extension candidates. Maximal degree in co-relation 15961. Up to 2074 conditions per place. [2022-11-20 10:57:07,482 INFO L137 encePairwiseOnDemand]: 618/624 looper letters, 31 selfloop transitions, 8 changer transitions 0/571 dead transitions. [2022-11-20 10:57:07,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 571 transitions, 1356 flow [2022-11-20 10:57:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:57:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:57:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2697 transitions. [2022-11-20 10:57:07,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864423076923077 [2022-11-20 10:57:07,492 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2697 transitions. [2022-11-20 10:57:07,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2697 transitions. [2022-11-20 10:57:07,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:07,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2697 transitions. [2022-11-20 10:57:07,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 539.4) internal successors, (2697), 5 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states 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 10:57:07,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states 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 10:57:07,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states 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 10:57:07,514 INFO L175 Difference]: Start difference. First operand has 564 places, 571 transitions, 1280 flow. Second operand 5 states and 2697 transitions. [2022-11-20 10:57:07,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 571 transitions, 1356 flow [2022-11-20 10:57:07,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 571 transitions, 1354 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:57:07,533 INFO L231 Difference]: Finished difference. Result has 567 places, 571 transitions, 1298 flow [2022-11-20 10:57:07,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1298, PETRI_PLACES=567, PETRI_TRANSITIONS=571} [2022-11-20 10:57:07,535 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 6 predicate places. [2022-11-20 10:57:07,535 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 571 transitions, 1298 flow [2022-11-20 10:57:07,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 535.75) internal successors, (2143), 4 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states 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 10:57:07,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:07,537 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:57:07,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 10:57:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2056264687, now seen corresponding path program 1 times [2022-11-20 10:57:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:07,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853710900] [2022-11-20 10:57:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:07,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:07,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853710900] [2022-11-20 10:57:07,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853710900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:07,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642663614] [2022-11-20 10:57:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:07,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:07,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:07,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:57:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:07,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:57:07,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:07,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:07,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642663614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:07,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:57:07,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 10:57:07,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906362706] [2022-11-20 10:57:07,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:07,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:57:07,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:08,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:57:08,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:57:08,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-20 10:57:08,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 571 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 535.2) internal successors, (2676), 5 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states 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 10:57:08,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:08,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-20 10:57:08,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:14,634 INFO L130 PetriNetUnfolder]: 1860/11769 cut-off events. [2022-11-20 10:57:14,634 INFO L131 PetriNetUnfolder]: For 6505/7674 co-relation queries the response was YES. [2022-11-20 10:57:14,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16067 conditions, 11769 events. 1860/11769 cut-off events. For 6505/7674 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 121660 event pairs, 324 based on Foata normal form. 11/10021 useless extension candidates. Maximal degree in co-relation 8538. Up to 2087 conditions per place. [2022-11-20 10:57:15,128 INFO L137 encePairwiseOnDemand]: 620/624 looper letters, 33 selfloop transitions, 5 changer transitions 0/570 dead transitions. [2022-11-20 10:57:15,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 570 transitions, 1370 flow [2022-11-20 10:57:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:57:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:57:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2163 transitions. [2022-11-20 10:57:15,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665865384615384 [2022-11-20 10:57:15,134 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2163 transitions. [2022-11-20 10:57:15,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2163 transitions. [2022-11-20 10:57:15,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:15,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2163 transitions. [2022-11-20 10:57:15,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 540.75) internal successors, (2163), 4 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 10:57:15,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states 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 10:57:15,145 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states 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 10:57:15,145 INFO L175 Difference]: Start difference. First operand has 567 places, 571 transitions, 1298 flow. Second operand 4 states and 2163 transitions. [2022-11-20 10:57:15,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 570 transitions, 1370 flow [2022-11-20 10:57:15,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 570 transitions, 1358 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:57:15,157 INFO L231 Difference]: Finished difference. Result has 566 places, 570 transitions, 1292 flow [2022-11-20 10:57:15,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1292, PETRI_PLACES=566, PETRI_TRANSITIONS=570} [2022-11-20 10:57:15,159 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 5 predicate places. [2022-11-20 10:57:15,159 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 570 transitions, 1292 flow [2022-11-20 10:57:15,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 535.2) internal successors, (2676), 5 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states 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 10:57:15,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:15,161 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] [2022-11-20 10:57:15,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:15,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 10:57:15,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 10:57:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:15,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2143922041, now seen corresponding path program 1 times [2022-11-20 10:57:15,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:15,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140089564] [2022-11-20 10:57:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:15,470 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 10:57:15,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:15,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140089564] [2022-11-20 10:57:15,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140089564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:15,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350763111] [2022-11-20 10:57:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:15,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:15,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:15,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:15,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:57:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:15,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:57:15,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:15,733 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 10:57:15,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:15,771 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 10:57:15,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350763111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:15,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:15,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 10:57:15,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603608272] [2022-11-20 10:57:15,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:15,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:57:15,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:57:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:57:15,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-20 10:57:15,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 570 transitions, 1292 flow. Second operand has 10 states, 10 states have (on average 535.0) internal successors, (5350), 10 states have internal predecessors, (5350), 0 states have call successors, (0), 0 states 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 10:57:15,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:15,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-20 10:57:15,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:20,927 INFO L130 PetriNetUnfolder]: 1826/10973 cut-off events. [2022-11-20 10:57:20,927 INFO L131 PetriNetUnfolder]: For 6348/6947 co-relation queries the response was YES. [2022-11-20 10:57:21,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15220 conditions, 10973 events. 1826/10973 cut-off events. For 6348/6947 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 111439 event pairs, 410 based on Foata normal form. 10/9338 useless extension candidates. Maximal degree in co-relation 8035. Up to 2064 conditions per place. [2022-11-20 10:57:21,755 INFO L137 encePairwiseOnDemand]: 618/624 looper letters, 40 selfloop transitions, 9 changer transitions 0/581 dead transitions. [2022-11-20 10:57:21,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 581 transitions, 1428 flow [2022-11-20 10:57:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:57:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:57:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4839 transitions. [2022-11-20 10:57:21,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8616452991452992 [2022-11-20 10:57:21,767 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4839 transitions. [2022-11-20 10:57:21,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4839 transitions. [2022-11-20 10:57:21,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:21,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4839 transitions. [2022-11-20 10:57:21,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 537.6666666666666) internal successors, (4839), 9 states have internal predecessors, (4839), 0 states have call successors, (0), 0 states 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 10:57:21,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 624.0) internal successors, (6240), 10 states have internal predecessors, (6240), 0 states have call successors, (0), 0 states 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 10:57:21,794 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 624.0) internal successors, (6240), 10 states have internal predecessors, (6240), 0 states have call successors, (0), 0 states 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 10:57:21,795 INFO L175 Difference]: Start difference. First operand has 566 places, 570 transitions, 1292 flow. Second operand 9 states and 4839 transitions. [2022-11-20 10:57:21,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 581 transitions, 1428 flow [2022-11-20 10:57:21,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 581 transitions, 1414 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:57:21,809 INFO L231 Difference]: Finished difference. Result has 575 places, 574 transitions, 1338 flow [2022-11-20 10:57:21,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1338, PETRI_PLACES=575, PETRI_TRANSITIONS=574} [2022-11-20 10:57:21,811 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 14 predicate places. [2022-11-20 10:57:21,811 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 574 transitions, 1338 flow [2022-11-20 10:57:21,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 535.0) internal successors, (5350), 10 states have internal predecessors, (5350), 0 states have call successors, (0), 0 states 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 10:57:21,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:21,814 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:21,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:22,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7e45802-2ce4-4d3b-ae7b-29f9df53eda1/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 10:57:22,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 10:57:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash 653321452, now seen corresponding path program 1 times [2022-11-20 10:57:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494989888] [2022-11-20 10:57:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 10:57:22,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:22,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494989888] [2022-11-20 10:57:22,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494989888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:22,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:22,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:22,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924354753] [2022-11-20 10:57:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:22,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:57:22,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:57:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:22,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 624 [2022-11-20 10:57:22,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 574 transitions, 1338 flow. Second operand has 4 states, 4 states have (on average 534.5) internal successors, (2138), 4 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states 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 10:57:22,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:57:22,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 624 [2022-11-20 10:57:22,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:57:27,445 INFO L130 PetriNetUnfolder]: 1824/10965 cut-off events. [2022-11-20 10:57:27,445 INFO L131 PetriNetUnfolder]: For 6620/8754 co-relation queries the response was YES. [2022-11-20 10:57:27,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15283 conditions, 10965 events. 1824/10965 cut-off events. For 6620/8754 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 112090 event pairs, 424 based on Foata normal form. 18/9347 useless extension candidates. Maximal degree in co-relation 8056. Up to 2128 conditions per place. [2022-11-20 10:57:27,909 INFO L137 encePairwiseOnDemand]: 617/624 looper letters, 39 selfloop transitions, 4 changer transitions 0/581 dead transitions. [2022-11-20 10:57:27,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 581 transitions, 1438 flow [2022-11-20 10:57:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:57:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:57:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2706 transitions. [2022-11-20 10:57:27,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8673076923076923 [2022-11-20 10:57:27,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2706 transitions. [2022-11-20 10:57:27,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2706 transitions. [2022-11-20 10:57:27,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:57:27,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2706 transitions. [2022-11-20 10:57:27,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 541.2) internal successors, (2706), 5 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states 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 10:57:27,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states 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 10:57:27,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states 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 10:57:27,936 INFO L175 Difference]: Start difference. First operand has 575 places, 574 transitions, 1338 flow. Second operand 5 states and 2706 transitions. [2022-11-20 10:57:27,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 581 transitions, 1438 flow [2022-11-20 10:57:27,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 581 transitions, 1422 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-20 10:57:27,951 INFO L231 Difference]: Finished difference. Result has 578 places, 577 transitions, 1354 flow [2022-11-20 10:57:27,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1354, PETRI_PLACES=578, PETRI_TRANSITIONS=577} [2022-11-20 10:57:27,953 INFO L288 CegarLoopForPetriNet]: 561 programPoint places, 17 predicate places. [2022-11-20 10:57:27,953 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 577 transitions, 1354 flow [2022-11-20 10:57:27,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 534.5) internal successors, (2138), 4 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states 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 10:57:27,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:57:27,954 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:27,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:57:27,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-11-20 10:57:27,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1276344434, now seen corresponding path program 1 times [2022-11-20 10:57:27,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:27,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265046361] [2022-11-20 10:57:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:27,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:28,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:57:28,029 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:57:28,030 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2022-11-20 10:57:28,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2022-11-20 10:57:28,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2022-11-20 10:57:28,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2022-11-20 10:57:28,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2022-11-20 10:57:28,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2022-11-20 10:57:28,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2022-11-20 10:57:28,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2022-11-20 10:57:28,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2022-11-20 10:57:28,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2022-11-20 10:57:28,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2022-11-20 10:57:28,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2022-11-20 10:57:28,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2022-11-20 10:57:28,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 30 remaining) [2022-11-20 10:57:28,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2022-11-20 10:57:28,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2022-11-20 10:57:28,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2022-11-20 10:57:28,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2022-11-20 10:57:28,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2022-11-20 10:57:28,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2022-11-20 10:57:28,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2022-11-20 10:57:28,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2022-11-20 10:57:28,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2022-11-20 10:57:28,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2022-11-20 10:57:28,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2022-11-20 10:57:28,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2022-11-20 10:57:28,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2022-11-20 10:57:28,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2022-11-20 10:57:28,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2022-11-20 10:57:28,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2022-11-20 10:57:28,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:57:28,036 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 10:57:28,037 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:57:28,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-20 10:57:28,171 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-20 10:57:28,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 673 places, 751 transitions, 1652 flow