./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.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_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/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_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/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_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/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 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --- 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 10:30:02,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:02,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:02,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:02,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:02,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:02,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:02,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:02,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:02,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:02,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:02,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:02,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:02,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:02,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:02,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:02,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:02,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:02,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:02,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:02,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:02,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:02,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:02,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:02,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:02,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:02,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:02,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:02,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:02,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:02,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:02,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:02,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:02,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:02,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:02,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:02,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:02,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:02,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:02,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:02,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:02,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:30:02,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:02,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:02,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:02,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:02,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:02,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:02,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:02,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:02,782 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:02,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:02,783 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:30:02,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:30:02,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:02,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:30:02,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:02,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:02,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:02,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:02,785 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:30:02,785 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:30:02,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:02,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:02,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:02,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:02,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:02,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:02,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:02,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:02,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:02,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:02,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:02,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:02,789 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:02,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:02,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:02,790 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_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 [2022-11-20 10:30:03,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:03,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:03,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:03,142 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:03,142 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:03,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-11-20 10:30:06,193 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:06,464 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:06,464 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-11-20 10:30:06,476 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/data/85c889a65/8e40331ba0c14d55a4b20daf1249891d/FLAGe24e0c8bc [2022-11-20 10:30:06,491 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/data/85c889a65/8e40331ba0c14d55a4b20daf1249891d [2022-11-20 10:30:06,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:06,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:06,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:06,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:06,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:06,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:06" (1/1) ... [2022-11-20 10:30:06,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6f498a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:06, skipping insertion in model container [2022-11-20 10:30:06,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:06" (1/1) ... [2022-11-20 10:30:06,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:06,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:06,884 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_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-11-20 10:30:06,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:06,947 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:06,991 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_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-11-20 10:30:07,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:07,034 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:07,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07 WrapperNode [2022-11-20 10:30:07,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:07,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:07,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:07,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:07,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,085 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 234 [2022-11-20 10:30:07,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:07,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:07,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:07,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:07,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,114 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:07,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:07,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:07,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:07,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (1/1) ... [2022-11-20 10:30:07,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:07,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:07,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:07,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:30:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 10:30:07,206 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 10:30:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:30:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:30:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:30:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 10:30:07,207 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 10:30:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:30:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:07,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:07,210 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 10:30:07,384 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:07,387 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:07,904 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:07,913 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:07,919 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-20 10:30:07,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:07 BoogieIcfgContainer [2022-11-20 10:30:07,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:07,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:07,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:07,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:07,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:06" (1/3) ... [2022-11-20 10:30:07,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c8c937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:07, skipping insertion in model container [2022-11-20 10:30:07,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:07" (2/3) ... [2022-11-20 10:30:07,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c8c937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:07, skipping insertion in model container [2022-11-20 10:30:07,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:07" (3/3) ... [2022-11-20 10:30:07,937 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2022-11-20 10:30:07,955 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:30:07,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:07,968 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 10:30:07,968 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:30:08,094 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:30:08,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 257 transitions, 536 flow [2022-11-20 10:30:08,371 INFO L130 PetriNetUnfolder]: 58/455 cut-off events. [2022-11-20 10:30:08,371 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-20 10:30:08,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 455 events. 58/455 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2043 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 241. Up to 8 conditions per place. [2022-11-20 10:30:08,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 257 transitions, 536 flow [2022-11-20 10:30:08,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 257 transitions, 536 flow [2022-11-20 10:30:08,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:08,416 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;@1c897a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:08,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 10:30:08,428 INFO L130 PetriNetUnfolder]: 4/73 cut-off events. [2022-11-20 10:30:08,428 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:30:08,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:08,429 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] [2022-11-20 10:30:08,430 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 10:30:08,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash -731391095, now seen corresponding path program 1 times [2022-11-20 10:30:08,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:08,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131044802] [2022-11-20 10:30:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:08,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:08,982 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 10:30:08,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:08,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131044802] [2022-11-20 10:30:08,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131044802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:08,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:08,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:08,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999855204] [2022-11-20 10:30:08,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:09,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:09,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:09,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 257 [2022-11-20 10:30:09,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 257 transitions, 536 flow. Second operand has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 10:30:09,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:09,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 257 [2022-11-20 10:30:09,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:09,222 INFO L130 PetriNetUnfolder]: 8/318 cut-off events. [2022-11-20 10:30:09,222 INFO L131 PetriNetUnfolder]: For 27/69 co-relation queries the response was YES. [2022-11-20 10:30:09,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 318 events. 8/318 cut-off events. For 27/69 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1070 event pairs, 0 based on Foata normal form. 120/399 useless extension candidates. Maximal degree in co-relation 219. Up to 15 conditions per place. [2022-11-20 10:30:09,229 INFO L137 encePairwiseOnDemand]: 224/257 looper letters, 14 selfloop transitions, 4 changer transitions 0/229 dead transitions. [2022-11-20 10:30:09,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 229 transitions, 516 flow [2022-11-20 10:30:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:30:09,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:30:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2022-11-20 10:30:09,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8840466926070039 [2022-11-20 10:30:09,258 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2022-11-20 10:30:09,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2022-11-20 10:30:09,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:09,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2022-11-20 10:30:09,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states 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 10:30:09,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states 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 10:30:09,285 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states 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 10:30:09,287 INFO L175 Difference]: Start difference. First operand has 230 places, 257 transitions, 536 flow. Second operand 5 states and 1136 transitions. [2022-11-20 10:30:09,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 229 transitions, 516 flow [2022-11-20 10:30:09,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:30:09,298 INFO L231 Difference]: Finished difference. Result has 231 places, 227 transitions, 488 flow [2022-11-20 10:30:09,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2022-11-20 10:30:09,304 INFO L288 CegarLoopForPetriNet]: 230 programPoint places, 1 predicate places. [2022-11-20 10:30:09,305 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 488 flow [2022-11-20 10:30:09,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 10:30:09,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:09,306 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] [2022-11-20 10:30:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:09,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-20 10:30:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1464052152, now seen corresponding path program 1 times [2022-11-20 10:30:09,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:09,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388563072] [2022-11-20 10:30:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:09,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:30:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:30:09,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:30:09,417 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:30:09,419 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-11-20 10:30:09,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-11-20 10:30:09,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-11-20 10:30:09,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-11-20 10:30:09,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-11-20 10:30:09,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-11-20 10:30:09,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-11-20 10:30:09,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-11-20 10:30:09,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-11-20 10:30:09,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2022-11-20 10:30:09,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-11-20 10:30:09,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-11-20 10:30:09,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-11-20 10:30:09,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2022-11-20 10:30:09,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-11-20 10:30:09,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-11-20 10:30:09,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-11-20 10:30:09,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-11-20 10:30:09,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-11-20 10:30:09,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-11-20 10:30:09,427 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-11-20 10:30:09,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-11-20 10:30:09,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-11-20 10:30:09,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-11-20 10:30:09,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-11-20 10:30:09,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-11-20 10:30:09,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:09,429 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 10:30:09,432 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:30:09,432 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:30:09,564 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-20 10:30:09,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 405 transitions, 858 flow [2022-11-20 10:30:10,097 INFO L130 PetriNetUnfolder]: 197/1356 cut-off events. [2022-11-20 10:30:10,097 INFO L131 PetriNetUnfolder]: For 72/78 co-relation queries the response was YES. [2022-11-20 10:30:10,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 1356 events. 197/1356 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8674 event pairs, 1 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 822. Up to 32 conditions per place. [2022-11-20 10:30:10,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 405 transitions, 858 flow [2022-11-20 10:30:10,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 405 transitions, 858 flow [2022-11-20 10:30:10,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:10,158 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;@1c897a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:10,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-20 10:30:10,174 INFO L130 PetriNetUnfolder]: 4/73 cut-off events. [2022-11-20 10:30:10,174 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:30:10,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:10,175 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] [2022-11-20 10:30:10,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-20 10:30:10,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash -552351752, now seen corresponding path program 1 times [2022-11-20 10:30:10,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:10,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250400977] [2022-11-20 10:30:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:10,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:10,359 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 10:30:10,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:10,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250400977] [2022-11-20 10:30:10,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250400977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:10,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:10,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:10,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796191451] [2022-11-20 10:30:10,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:10,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:10,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:10,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:10,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:10,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 405 [2022-11-20 10:30:10,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 405 transitions, 858 flow. Second operand has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 10:30:10,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:10,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 405 [2022-11-20 10:30:10,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:10,928 INFO L130 PetriNetUnfolder]: 60/1054 cut-off events. [2022-11-20 10:30:10,929 INFO L131 PetriNetUnfolder]: For 257/547 co-relation queries the response was YES. [2022-11-20 10:30:10,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 1054 events. 60/1054 cut-off events. For 257/547 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6533 event pairs, 2 based on Foata normal form. 861/1759 useless extension candidates. Maximal degree in co-relation 751. Up to 85 conditions per place. [2022-11-20 10:30:10,971 INFO L137 encePairwiseOnDemand]: 350/405 looper letters, 27 selfloop transitions, 4 changer transitions 0/360 dead transitions. [2022-11-20 10:30:10,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 360 transitions, 830 flow [2022-11-20 10:30:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:30:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:30:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1761 transitions. [2022-11-20 10:30:10,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8696296296296296 [2022-11-20 10:30:10,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1761 transitions. [2022-11-20 10:30:10,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1761 transitions. [2022-11-20 10:30:10,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:10,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1761 transitions. [2022-11-20 10:30:10,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states 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 10:30:10,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:10,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:10,991 INFO L175 Difference]: Start difference. First operand has 354 places, 405 transitions, 858 flow. Second operand 5 states and 1761 transitions. [2022-11-20 10:30:10,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 360 transitions, 830 flow [2022-11-20 10:30:10,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 360 transitions, 830 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:30:11,004 INFO L231 Difference]: Finished difference. Result has 357 places, 356 transitions, 786 flow [2022-11-20 10:30:11,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=357, PETRI_TRANSITIONS=356} [2022-11-20 10:30:11,006 INFO L288 CegarLoopForPetriNet]: 354 programPoint places, 3 predicate places. [2022-11-20 10:30:11,006 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 356 transitions, 786 flow [2022-11-20 10:30:11,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 10:30:11,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:11,008 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] [2022-11-20 10:30:11,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:11,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-20 10:30:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1457005284, now seen corresponding path program 1 times [2022-11-20 10:30:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:11,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265490454] [2022-11-20 10:30:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:11,135 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 10:30:11,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:11,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265490454] [2022-11-20 10:30:11,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265490454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:11,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:11,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:11,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302724178] [2022-11-20 10:30:11,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:11,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:11,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 405 [2022-11-20 10:30:11,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 356 transitions, 786 flow. Second operand has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states 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 10:30:11,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:11,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 405 [2022-11-20 10:30:11,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:11,578 INFO L130 PetriNetUnfolder]: 60/1053 cut-off events. [2022-11-20 10:30:11,579 INFO L131 PetriNetUnfolder]: For 262/538 co-relation queries the response was YES. [2022-11-20 10:30:11,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 1053 events. 60/1053 cut-off events. For 262/538 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6573 event pairs, 2 based on Foata normal form. 13/914 useless extension candidates. Maximal degree in co-relation 1170. Up to 74 conditions per place. [2022-11-20 10:30:11,614 INFO L137 encePairwiseOnDemand]: 399/405 looper letters, 19 selfloop transitions, 8 changer transitions 0/356 dead transitions. [2022-11-20 10:30:11,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 356 transitions, 838 flow [2022-11-20 10:30:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:30:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:30:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1670 transitions. [2022-11-20 10:30:11,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8246913580246914 [2022-11-20 10:30:11,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1670 transitions. [2022-11-20 10:30:11,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1670 transitions. [2022-11-20 10:30:11,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:11,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1670 transitions. [2022-11-20 10:30:11,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.0) internal successors, (1670), 5 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:11,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:11,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:11,639 INFO L175 Difference]: Start difference. First operand has 357 places, 356 transitions, 786 flow. Second operand 5 states and 1670 transitions. [2022-11-20 10:30:11,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 356 transitions, 838 flow [2022-11-20 10:30:11,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 356 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:11,652 INFO L231 Difference]: Finished difference. Result has 360 places, 356 transitions, 804 flow [2022-11-20 10:30:11,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=360, PETRI_TRANSITIONS=356} [2022-11-20 10:30:11,654 INFO L288 CegarLoopForPetriNet]: 354 programPoint places, 6 predicate places. [2022-11-20 10:30:11,654 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 356 transitions, 804 flow [2022-11-20 10:30:11,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states 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 10:30:11,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:11,656 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] [2022-11-20 10:30:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:30:11,656 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-20 10:30:11,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2077475557, now seen corresponding path program 1 times [2022-11-20 10:30:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:11,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62167321] [2022-11-20 10:30:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:11,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:11,790 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 10:30:11,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:11,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62167321] [2022-11-20 10:30:11,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62167321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:11,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682599004] [2022-11-20 10:30:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:11,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:11,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:11,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:11,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:30:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:11,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:30:11,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:12,057 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 10:30:12,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:12,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682599004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:12,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:30:12,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:30:12,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134854457] [2022-11-20 10:30:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:12,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:12,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 405 [2022-11-20 10:30:12,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 356 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 10:30:12,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:12,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 405 [2022-11-20 10:30:12,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:12,594 INFO L130 PetriNetUnfolder]: 60/1052 cut-off events. [2022-11-20 10:30:12,595 INFO L131 PetriNetUnfolder]: For 268/530 co-relation queries the response was YES. [2022-11-20 10:30:12,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 1052 events. 60/1052 cut-off events. For 268/530 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6502 event pairs, 2 based on Foata normal form. 11/911 useless extension candidates. Maximal degree in co-relation 767. Up to 77 conditions per place. [2022-11-20 10:30:12,623 INFO L137 encePairwiseOnDemand]: 400/405 looper letters, 23 selfloop transitions, 6 changer transitions 0/358 dead transitions. [2022-11-20 10:30:12,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 358 transitions, 864 flow [2022-11-20 10:30:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:30:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:30:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2333 transitions. [2022-11-20 10:30:12,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8229276895943562 [2022-11-20 10:30:12,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2333 transitions. [2022-11-20 10:30:12,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2333 transitions. [2022-11-20 10:30:12,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:12,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2333 transitions. [2022-11-20 10:30:12,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 333.2857142857143) internal successors, (2333), 7 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:12,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 405.0) internal successors, (3240), 8 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states 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 10:30:12,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 405.0) internal successors, (3240), 8 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states 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 10:30:12,648 INFO L175 Difference]: Start difference. First operand has 360 places, 356 transitions, 804 flow. Second operand 7 states and 2333 transitions. [2022-11-20 10:30:12,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 358 transitions, 864 flow [2022-11-20 10:30:12,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 358 transitions, 852 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:30:12,659 INFO L231 Difference]: Finished difference. Result has 362 places, 355 transitions, 800 flow [2022-11-20 10:30:12,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=362, PETRI_TRANSITIONS=355} [2022-11-20 10:30:12,661 INFO L288 CegarLoopForPetriNet]: 354 programPoint places, 8 predicate places. [2022-11-20 10:30:12,662 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 355 transitions, 800 flow [2022-11-20 10:30:12,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 10:30:12,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:12,663 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] [2022-11-20 10:30:12,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:12,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be48e503-da2d-4aef-b9b5-7e93cd14e9c3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:12,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-11-20 10:30:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1440968242, now seen corresponding path program 1 times [2022-11-20 10:30:12,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:12,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762023665] [2022-11-20 10:30:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:12,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:13,544 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 10:30:13,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:13,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762023665] [2022-11-20 10:30:13,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762023665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:13,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:13,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:30:13,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886123542] [2022-11-20 10:30:13,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:13,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:30:13,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:13,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:30:13,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:30:13,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 405 [2022-11-20 10:30:13,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 355 transitions, 800 flow. Second operand has 13 states, 13 states have (on average 250.07692307692307) internal successors, (3251), 13 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states 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 10:30:13,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:13,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 405 [2022-11-20 10:30:13,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand