./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8 --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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --- 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-e04fb08 [2022-11-16 11:12:48,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:12:48,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:12:48,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:12:48,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:12:48,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:12:48,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:12:48,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:12:48,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:12:48,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:12:48,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:12:48,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:12:48,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:12:48,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:12:48,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:12:48,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:12:48,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:12:48,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:12:48,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:12:48,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:12:48,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:12:48,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:12:48,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:12:48,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:12:48,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:12:48,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:12:48,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:12:48,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:12:48,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:12:48,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:12:48,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:12:48,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:12:48,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:12:48,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:12:48,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:12:48,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:12:48,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:12:48,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:12:48,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:12:48,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:12:48,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:12:48,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:12:48,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:12:48,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:12:48,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:12:48,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:12:48,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:12:48,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:12:48,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:12:48,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:12:48,756 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:12:48,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:12:48,757 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:12:48,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:12:48,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:12:48,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:12:48,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:12:48,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:12:48,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:12:48,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:12:48,759 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:12:48,759 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:12:48,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:12:48,760 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:12:48,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:12:48,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:12:48,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:12:48,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:12:48,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:48,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:12:48,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:12:48,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:12:48,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:12:48,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:12:48,763 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:12:48,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:12:48,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:12:48,763 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_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f [2022-11-16 11:12:49,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:12:49,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:12:49,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:12:49,116 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:12:49,117 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:12:49,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-16 11:12:49,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/data/00ee377d6/a444cf6d3eff438ba53b133d257751f3/FLAGc24a3013d [2022-11-16 11:12:49,847 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:12:49,847 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-16 11:12:49,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/data/00ee377d6/a444cf6d3eff438ba53b133d257751f3/FLAGc24a3013d [2022-11-16 11:12:50,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/data/00ee377d6/a444cf6d3eff438ba53b133d257751f3 [2022-11-16 11:12:50,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:12:50,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:12:50,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:50,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:12:50,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:12:50,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9391af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50, skipping insertion in model container [2022-11-16 11:12:50,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:12:50,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:12:50,514 WARN L229 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_cbc33581-6acf-494f-adb4-2c27a8b1e10a/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-16 11:12:50,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:50,534 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:12:50,557 WARN L229 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_cbc33581-6acf-494f-adb4-2c27a8b1e10a/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-16 11:12:50,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:50,577 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:12:50,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50 WrapperNode [2022-11-16 11:12:50,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:50,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:50,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:12:50,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:12:50,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,652 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 353 [2022-11-16 11:12:50,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:50,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:12:50,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:12:50,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:12:50,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:12:50,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:12:50,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:12:50,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:12:50,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (1/1) ... [2022-11-16 11:12:50,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:50,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:50,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:12:50,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:12:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:12:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:12:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:12:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:12:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:12:50,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:12:50,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:12:50,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:12:50,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:12:50,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:12:50,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:12:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:12:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:12:50,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:12:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:12:50,800 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:12:50,971 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:12:50,973 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:12:51,765 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:12:51,776 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:12:51,777 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:12:51,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:51 BoogieIcfgContainer [2022-11-16 11:12:51,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:12:51,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:12:51,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:12:51,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:12:51,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:12:50" (1/3) ... [2022-11-16 11:12:51,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c884e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:51, skipping insertion in model container [2022-11-16 11:12:51,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:50" (2/3) ... [2022-11-16 11:12:51,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c884e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:51, skipping insertion in model container [2022-11-16 11:12:51,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:51" (3/3) ... [2022-11-16 11:12:51,789 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2022-11-16 11:12:51,798 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:12:51,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:12:51,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-16 11:12:51,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:12:51,980 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:12:52,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 501 transitions, 1026 flow [2022-11-16 11:12:52,327 INFO L130 PetriNetUnfolder]: 39/498 cut-off events. [2022-11-16 11:12:52,328 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:12:52,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 39/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1043 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-11-16 11:12:52,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 472 places, 501 transitions, 1026 flow [2022-11-16 11:12:52,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 473 transitions, 964 flow [2022-11-16 11:12:52,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:52,375 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;@5b822b9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:52,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-16 11:12:52,393 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-16 11:12:52,393 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:12:52,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:52,394 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] [2022-11-16 11:12:52,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:12:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash -789370683, now seen corresponding path program 1 times [2022-11-16 11:12:52,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:52,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372867927] [2022-11-16 11:12:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:52,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:52,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372867927] [2022-11-16 11:12:52,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372867927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:52,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:52,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:52,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993472582] [2022-11-16 11:12:52,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:12:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:52,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:12:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:12:52,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-16 11:12:52,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 473 transitions, 964 flow. Second operand has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:52,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:52,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-16 11:12:52,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:53,412 INFO L130 PetriNetUnfolder]: 31/810 cut-off events. [2022-11-16 11:12:53,412 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-16 11:12:53,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 810 events. 31/810 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3102 event pairs, 0 based on Foata normal form. 44/720 useless extension candidates. Maximal degree in co-relation 550. Up to 45 conditions per place. [2022-11-16 11:12:53,430 INFO L137 encePairwiseOnDemand]: 459/501 looper letters, 60 selfloop transitions, 14 changer transitions 8/483 dead transitions. [2022-11-16 11:12:53,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 483 transitions, 1150 flow [2022-11-16 11:12:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:12:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:12:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2293 transitions. [2022-11-16 11:12:53,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153692614770459 [2022-11-16 11:12:53,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2293 transitions. [2022-11-16 11:12:53,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2293 transitions. [2022-11-16 11:12:53,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:53,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2293 transitions. [2022-11-16 11:12:53,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 458.6) internal successors, (2293), 5 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:53,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:53,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 501.0) internal successors, (3006), 6 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:53,500 INFO L175 Difference]: Start difference. First operand has 445 places, 473 transitions, 964 flow. Second operand 5 states and 2293 transitions. [2022-11-16 11:12:53,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 483 transitions, 1150 flow [2022-11-16 11:12:53,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 483 transitions, 1126 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:12:53,528 INFO L231 Difference]: Finished difference. Result has 446 places, 454 transitions, 996 flow [2022-11-16 11:12:53,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=996, PETRI_PLACES=446, PETRI_TRANSITIONS=454} [2022-11-16 11:12:53,535 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 1 predicate places. [2022-11-16 11:12:53,536 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 454 transitions, 996 flow [2022-11-16 11:12:53,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 436.5) internal successors, (1746), 4 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:53,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:53,538 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:53,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:12:53,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:12:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -955416257, now seen corresponding path program 1 times [2022-11-16 11:12:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51296620] [2022-11-16 11:12:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:53,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:53,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51296620] [2022-11-16 11:12:53,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51296620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:53,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949447257] [2022-11-16 11:12:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:53,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:53,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:53,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:53,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:12:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:12:53,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:53,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:54,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949447257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:54,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:54,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:12:54,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831334941] [2022-11-16 11:12:54,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:54,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:12:54,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:54,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:12:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:12:54,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-16 11:12:54,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 454 transitions, 996 flow. Second operand has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:54,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:54,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-16 11:12:54,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:54,949 INFO L130 PetriNetUnfolder]: 76/1877 cut-off events. [2022-11-16 11:12:54,949 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-11-16 11:12:54,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1877 events. 76/1877 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11423 event pairs, 0 based on Foata normal form. 9/1591 useless extension candidates. Maximal degree in co-relation 1368. Up to 36 conditions per place. [2022-11-16 11:12:54,984 INFO L137 encePairwiseOnDemand]: 478/501 looper letters, 114 selfloop transitions, 62 changer transitions 0/577 dead transitions. [2022-11-16 11:12:54,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 577 transitions, 1696 flow [2022-11-16 11:12:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:12:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:12:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 8015 transitions. [2022-11-16 11:12:54,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887779995564427 [2022-11-16 11:12:54,999 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 8015 transitions. [2022-11-16 11:12:54,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 8015 transitions. [2022-11-16 11:12:55,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:55,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 8015 transitions. [2022-11-16 11:12:55,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 445.27777777777777) internal successors, (8015), 18 states have internal predecessors, (8015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:55,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:55,083 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 501.0) internal successors, (9519), 19 states have internal predecessors, (9519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:55,083 INFO L175 Difference]: Start difference. First operand has 446 places, 454 transitions, 996 flow. Second operand 18 states and 8015 transitions. [2022-11-16 11:12:55,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 577 transitions, 1696 flow [2022-11-16 11:12:55,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 577 transitions, 1688 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:12:55,095 INFO L231 Difference]: Finished difference. Result has 458 places, 496 transitions, 1358 flow [2022-11-16 11:12:55,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1358, PETRI_PLACES=458, PETRI_TRANSITIONS=496} [2022-11-16 11:12:55,097 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 13 predicate places. [2022-11-16 11:12:55,097 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 496 transitions, 1358 flow [2022-11-16 11:12:55,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 437.6666666666667) internal successors, (5252), 12 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:55,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:55,101 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:55,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:55,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:55,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:12:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:55,307 INFO L85 PathProgramCache]: Analyzing trace with hash 446868092, now seen corresponding path program 1 times [2022-11-16 11:12:55,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:55,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595208834] [2022-11-16 11:12:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:55,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:55,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:55,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595208834] [2022-11-16 11:12:55,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595208834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:55,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977545649] [2022-11-16 11:12:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:55,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:55,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:55,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:55,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:12:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:12:55,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:55,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:55,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977545649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:55,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:55,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:12:55,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681733100] [2022-11-16 11:12:55,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:12:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:12:55,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:12:55,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 501 [2022-11-16 11:12:55,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 496 transitions, 1358 flow. Second operand has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:55,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:55,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 501 [2022-11-16 11:12:55,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:12:56,389 INFO L130 PetriNetUnfolder]: 76/1865 cut-off events. [2022-11-16 11:12:56,390 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-11-16 11:12:56,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 1865 events. 76/1865 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11344 event pairs, 0 based on Foata normal form. 12/1582 useless extension candidates. Maximal degree in co-relation 1722. Up to 72 conditions per place. [2022-11-16 11:12:56,424 INFO L137 encePairwiseOnDemand]: 484/501 looper letters, 61 selfloop transitions, 43 changer transitions 0/505 dead transitions. [2022-11-16 11:12:56,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 505 transitions, 1539 flow [2022-11-16 11:12:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:12:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:12:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3119 transitions. [2022-11-16 11:12:56,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.889364128885087 [2022-11-16 11:12:56,432 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3119 transitions. [2022-11-16 11:12:56,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3119 transitions. [2022-11-16 11:12:56,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:12:56,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3119 transitions. [2022-11-16 11:12:56,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.57142857142856) internal successors, (3119), 7 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:56,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:56,449 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 501.0) internal successors, (4008), 8 states have internal predecessors, (4008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:56,450 INFO L175 Difference]: Start difference. First operand has 458 places, 496 transitions, 1358 flow. Second operand 7 states and 3119 transitions. [2022-11-16 11:12:56,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 505 transitions, 1539 flow [2022-11-16 11:12:56,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 505 transitions, 1423 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:12:56,464 INFO L231 Difference]: Finished difference. Result has 452 places, 484 transitions, 1247 flow [2022-11-16 11:12:56,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1247, PETRI_PLACES=452, PETRI_TRANSITIONS=484} [2022-11-16 11:12:56,466 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 7 predicate places. [2022-11-16 11:12:56,466 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 484 transitions, 1247 flow [2022-11-16 11:12:56,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.3333333333333) internal successors, (2624), 6 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:56,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:12:56,468 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:56,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:12:56,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:56,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:12:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:56,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1481190213, now seen corresponding path program 2 times [2022-11-16 11:12:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:56,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801305231] [2022-11-16 11:12:56,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:56,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:57,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:57,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801305231] [2022-11-16 11:12:57,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801305231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:57,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867850639] [2022-11-16 11:12:57,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:12:57,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:57,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:57,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:57,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:12:57,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:12:57,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:12:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:12:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:12:57,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:12:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:12:57,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867850639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:12:57,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:12:57,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:12:57,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935021319] [2022-11-16 11:12:57,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:12:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:12:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:57,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:12:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:12:57,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 501 [2022-11-16 11:12:57,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 484 transitions, 1247 flow. Second operand has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:12:57,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:12:57,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 501 [2022-11-16 11:12:57,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:01,359 INFO L130 PetriNetUnfolder]: 1086/11053 cut-off events. [2022-11-16 11:13:01,359 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2022-11-16 11:13:01,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 11053 events. 1086/11053 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 124463 event pairs, 392 based on Foata normal form. 6/8588 useless extension candidates. Maximal degree in co-relation 10285. Up to 189 conditions per place. [2022-11-16 11:13:01,596 INFO L137 encePairwiseOnDemand]: 474/501 looper letters, 203 selfloop transitions, 81 changer transitions 0/659 dead transitions. [2022-11-16 11:13:01,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 659 transitions, 2268 flow [2022-11-16 11:13:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:13:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:13:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 10106 transitions. [2022-11-16 11:13:01,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8404856952761144 [2022-11-16 11:13:01,620 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 10106 transitions. [2022-11-16 11:13:01,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 10106 transitions. [2022-11-16 11:13:01,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:01,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 10106 transitions. [2022-11-16 11:13:01,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 421.0833333333333) internal successors, (10106), 24 states have internal predecessors, (10106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:01,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:01,672 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 501.0) internal successors, (12525), 25 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:01,672 INFO L175 Difference]: Start difference. First operand has 452 places, 484 transitions, 1247 flow. Second operand 24 states and 10106 transitions. [2022-11-16 11:13:01,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 659 transitions, 2268 flow [2022-11-16 11:13:01,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 659 transitions, 2177 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 11:13:01,692 INFO L231 Difference]: Finished difference. Result has 464 places, 500 transitions, 1410 flow [2022-11-16 11:13:01,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1410, PETRI_PLACES=464, PETRI_TRANSITIONS=500} [2022-11-16 11:13:01,695 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 19 predicate places. [2022-11-16 11:13:01,695 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 500 transitions, 1410 flow [2022-11-16 11:13:01,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 412.6111111111111) internal successors, (7427), 18 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:01,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:01,698 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:01,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:01,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:01,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:13:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1744759366, now seen corresponding path program 1 times [2022-11-16 11:13:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:01,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868308664] [2022-11-16 11:13:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:02,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:02,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868308664] [2022-11-16 11:13:02,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868308664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:02,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:02,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:02,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061836446] [2022-11-16 11:13:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:02,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:02,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:02,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-11-16 11:13:02,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 500 transitions, 1410 flow. Second operand has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:02,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:02,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-11-16 11:13:02,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:07,211 INFO L130 PetriNetUnfolder]: 2207/20708 cut-off events. [2022-11-16 11:13:07,211 INFO L131 PetriNetUnfolder]: For 628/718 co-relation queries the response was YES. [2022-11-16 11:13:07,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24065 conditions, 20708 events. 2207/20708 cut-off events. For 628/718 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 257220 event pairs, 912 based on Foata normal form. 0/16251 useless extension candidates. Maximal degree in co-relation 2664. Up to 1788 conditions per place. [2022-11-16 11:13:07,461 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 158 selfloop transitions, 43 changer transitions 0/602 dead transitions. [2022-11-16 11:13:07,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 602 transitions, 2210 flow [2022-11-16 11:13:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:13:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:13:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4796 transitions. [2022-11-16 11:13:07,474 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8702594810379242 [2022-11-16 11:13:07,474 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4796 transitions. [2022-11-16 11:13:07,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4796 transitions. [2022-11-16 11:13:07,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:07,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4796 transitions. [2022-11-16 11:13:07,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 436.0) internal successors, (4796), 11 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,501 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,502 INFO L175 Difference]: Start difference. First operand has 464 places, 500 transitions, 1410 flow. Second operand 11 states and 4796 transitions. [2022-11-16 11:13:07,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 602 transitions, 2210 flow [2022-11-16 11:13:07,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 602 transitions, 2030 flow, removed 19 selfloop flow, removed 15 redundant places. [2022-11-16 11:13:07,517 INFO L231 Difference]: Finished difference. Result has 462 places, 517 transitions, 1467 flow [2022-11-16 11:13:07,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1467, PETRI_PLACES=462, PETRI_TRANSITIONS=517} [2022-11-16 11:13:07,520 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 17 predicate places. [2022-11-16 11:13:07,521 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 517 transitions, 1467 flow [2022-11-16 11:13:07,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.2857142857143) internal successors, (2991), 7 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:07,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:07,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:13:07,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:13:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1203227791, now seen corresponding path program 1 times [2022-11-16 11:13:07,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530716287] [2022-11-16 11:13:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:07,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:07,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530716287] [2022-11-16 11:13:07,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530716287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:07,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:07,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:07,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346168259] [2022-11-16 11:13:07,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:07,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:07,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:07,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 501 [2022-11-16 11:13:07,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 517 transitions, 1467 flow. Second operand has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:07,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:07,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 501 [2022-11-16 11:13:07,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:10,686 INFO L130 PetriNetUnfolder]: 1944/13030 cut-off events. [2022-11-16 11:13:10,686 INFO L131 PetriNetUnfolder]: For 1772/1856 co-relation queries the response was YES. [2022-11-16 11:13:10,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16937 conditions, 13030 events. 1944/13030 cut-off events. For 1772/1856 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 143861 event pairs, 921 based on Foata normal form. 84/10466 useless extension candidates. Maximal degree in co-relation 10919. Up to 1980 conditions per place. [2022-11-16 11:13:10,863 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 154 selfloop transitions, 43 changer transitions 0/600 dead transitions. [2022-11-16 11:13:10,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 600 transitions, 2135 flow [2022-11-16 11:13:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:13:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:13:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4792 transitions. [2022-11-16 11:13:10,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695336599528216 [2022-11-16 11:13:10,876 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4792 transitions. [2022-11-16 11:13:10,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4792 transitions. [2022-11-16 11:13:10,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:10,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4792 transitions. [2022-11-16 11:13:10,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 435.6363636363636) internal successors, (4792), 11 states have internal predecessors, (4792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,905 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,905 INFO L175 Difference]: Start difference. First operand has 462 places, 517 transitions, 1467 flow. Second operand 11 states and 4792 transitions. [2022-11-16 11:13:10,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 600 transitions, 2135 flow [2022-11-16 11:13:10,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 600 transitions, 2130 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:13:10,926 INFO L231 Difference]: Finished difference. Result has 472 places, 519 transitions, 1560 flow [2022-11-16 11:13:10,927 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1560, PETRI_PLACES=472, PETRI_TRANSITIONS=519} [2022-11-16 11:13:10,928 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 27 predicate places. [2022-11-16 11:13:10,928 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 519 transitions, 1560 flow [2022-11-16 11:13:10,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:10,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:10,930 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:10,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:13:10,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:13:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:10,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1859295929, now seen corresponding path program 1 times [2022-11-16 11:13:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:10,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701778598] [2022-11-16 11:13:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:10,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:11,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701778598] [2022-11-16 11:13:11,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701778598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:11,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:11,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615906522] [2022-11-16 11:13:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:11,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:11,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 501 [2022-11-16 11:13:11,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 519 transitions, 1560 flow. Second operand has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:11,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:11,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 501 [2022-11-16 11:13:11,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:13:15,339 INFO L130 PetriNetUnfolder]: 2700/16604 cut-off events. [2022-11-16 11:13:15,339 INFO L131 PetriNetUnfolder]: For 3635/3761 co-relation queries the response was YES. [2022-11-16 11:13:15,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22361 conditions, 16604 events. 2700/16604 cut-off events. For 3635/3761 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 182412 event pairs, 1144 based on Foata normal form. 126/13497 useless extension candidates. Maximal degree in co-relation 15086. Up to 2934 conditions per place. [2022-11-16 11:13:15,598 INFO L137 encePairwiseOnDemand]: 482/501 looper letters, 153 selfloop transitions, 43 changer transitions 0/598 dead transitions. [2022-11-16 11:13:15,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 598 transitions, 2218 flow [2022-11-16 11:13:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:13:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:13:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4758 transitions. [2022-11-16 11:13:15,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633641807294502 [2022-11-16 11:13:15,613 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4758 transitions. [2022-11-16 11:13:15,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4758 transitions. [2022-11-16 11:13:15,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:13:15,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4758 transitions. [2022-11-16 11:13:15,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 432.54545454545456) internal successors, (4758), 11 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:15,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:15,645 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 501.0) internal successors, (6012), 12 states have internal predecessors, (6012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:15,645 INFO L175 Difference]: Start difference. First operand has 472 places, 519 transitions, 1560 flow. Second operand 11 states and 4758 transitions. [2022-11-16 11:13:15,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 598 transitions, 2218 flow [2022-11-16 11:13:15,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 598 transitions, 2178 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:13:15,675 INFO L231 Difference]: Finished difference. Result has 479 places, 521 transitions, 1618 flow [2022-11-16 11:13:15,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=501, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1618, PETRI_PLACES=479, PETRI_TRANSITIONS=521} [2022-11-16 11:13:15,677 INFO L288 CegarLoopForPetriNet]: 445 programPoint places, 34 predicate places. [2022-11-16 11:13:15,678 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 521 transitions, 1618 flow [2022-11-16 11:13:15,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 424.7142857142857) internal successors, (2973), 7 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:15,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:13:15,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:15,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:13:15,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-16 11:13:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:15,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1842500036, now seen corresponding path program 1 times [2022-11-16 11:13:15,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:15,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752060267] [2022-11-16 11:13:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:15,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:18,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752060267] [2022-11-16 11:13:18,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752060267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:18,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860936742] [2022-11-16 11:13:18,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:18,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:18,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:18,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:18,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc33581-6acf-494f-adb4-2c27a8b1e10a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:13:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:18,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 11:13:18,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:18,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:13:19,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:13:19,803 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 11:13:19,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 11:13:20,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:13:20,252 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 11:13:20,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 11:13:20,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:13:20,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:13:20,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 11:13:20,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 11:13:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:20,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:13:20,971 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_189 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_189) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-16 11:13:23,205 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:13:23,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-16 11:13:23,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:13:23,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 136 [2022-11-16 11:13:23,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-11-16 11:13:23,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-11-16 11:13:24,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:13:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 11:13:24,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860936742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:13:24,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:13:24,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 26] total 69 [2022-11-16 11:13:24,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881704752] [2022-11-16 11:13:24,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:13:24,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-16 11:13:24,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:24,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-16 11:13:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4347, Unknown=21, NotChecked=134, Total=4830 [2022-11-16 11:13:24,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 501 [2022-11-16 11:13:24,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 521 transitions, 1618 flow. Second operand has 70 states, 70 states have (on average 317.9) internal successors, (22253), 70 states have internal predecessors, (22253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:13:24,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:13:24,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 501 [2022-11-16 11:13:24,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand