./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro --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 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --- 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-8393723 [2022-11-18 20:18:11,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:18:11,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:18:11,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:18:11,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:18:11,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:18:11,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:18:11,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:18:11,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:18:11,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:18:11,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:18:11,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:18:11,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:18:11,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:18:11,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:18:11,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:18:11,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:18:11,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:18:11,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:18:11,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:18:11,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:18:11,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:18:11,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:18:11,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:18:11,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:18:11,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:18:11,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:18:11,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:18:11,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:18:11,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:18:11,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:18:11,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:18:11,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:18:11,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:18:11,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:18:11,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:18:11,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:18:11,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:18:11,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:18:11,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:18:11,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:18:11,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:18:11,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:18:11,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:18:11,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:18:11,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:18:11,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:18:11,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:18:11,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:18:11,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:18:11,849 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:18:11,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:18:11,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:18:11,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:18:11,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:18:11,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:18:11,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:18:11,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:18:11,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:18:11,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:18:11,853 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:18:11,853 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:18:11,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:18:11,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:18:11,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:18:11,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:18:11,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:18:11,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:18:11,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:18:11,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:18:11,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:18:11,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:18:11,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:18:11,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:18:11,857 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:18:11,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:18:11,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:18:11,857 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_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad [2022-11-18 20:18:12,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:18:12,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:18:12,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:18:12,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:18:12,164 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:18:12,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-11-18 20:18:12,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/data/a9ea69f4e/33262e83d7c44ea1abc198848897cef9/FLAG28558bfa6 [2022-11-18 20:18:12,743 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:18:12,744 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2022-11-18 20:18:12,752 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/data/a9ea69f4e/33262e83d7c44ea1abc198848897cef9/FLAG28558bfa6 [2022-11-18 20:18:13,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/data/a9ea69f4e/33262e83d7c44ea1abc198848897cef9 [2022-11-18 20:18:13,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:18:13,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:18:13,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:18:13,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:18:13,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:18:13,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4e63d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13, skipping insertion in model container [2022-11-18 20:18:13,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:18:13,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:18:13,468 WARN L234 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_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-11-18 20:18:13,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:18:13,494 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:18:13,548 WARN L234 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_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c[2823,2836] [2022-11-18 20:18:13,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:18:13,579 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:18:13,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13 WrapperNode [2022-11-18 20:18:13,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:18:13,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:18:13,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:18:13,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:18:13,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,660 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 284 [2022-11-18 20:18:13,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:18:13,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:18:13,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:18:13,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:18:13,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,695 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:18:13,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:18:13,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:18:13,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:18:13,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (1/1) ... [2022-11-18 20:18:13,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:18:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:13,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:18:13,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:18:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:18:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:18:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:18:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:18:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:18:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:18:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:18:13,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:18:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:18:13,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:18:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:18:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:18:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:18:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:18:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:18:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:18:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:18:13,815 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:18:13,971 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:18:13,975 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:18:14,849 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:18:15,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:18:15,295 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:18:15,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:18:15 BoogieIcfgContainer [2022-11-18 20:18:15,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:18:15,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:18:15,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:18:15,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:18:15,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:18:13" (1/3) ... [2022-11-18 20:18:15,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47645b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:18:15, skipping insertion in model container [2022-11-18 20:18:15,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:18:13" (2/3) ... [2022-11-18 20:18:15,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47645b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:18:15, skipping insertion in model container [2022-11-18 20:18:15,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:18:15" (3/3) ... [2022-11-18 20:18:15,316 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2022-11-18 20:18:15,328 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:18:15,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:18:15,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 20:18:15,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:18:15,545 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:18:15,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 390 transitions, 804 flow [2022-11-18 20:18:15,803 INFO L130 PetriNetUnfolder]: 31/387 cut-off events. [2022-11-18 20:18:15,803 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:18:15,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 31/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 405 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 294. Up to 3 conditions per place. [2022-11-18 20:18:15,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 390 transitions, 804 flow [2022-11-18 20:18:15,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 362 transitions, 742 flow [2022-11-18 20:18:15,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:18:15,841 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;@aacce9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:18:15,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-18 20:18:15,873 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-11-18 20:18:15,873 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:18:15,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:15,874 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] [2022-11-18 20:18:15,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1308981420, now seen corresponding path program 1 times [2022-11-18 20:18:15,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:15,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557111272] [2022-11-18 20:18:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:16,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557111272] [2022-11-18 20:18:16,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557111272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:16,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:16,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912761772] [2022-11-18 20:18:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:16,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:16,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:16,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:16,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:16,448 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-11-18 20:18:16,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 362 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 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) [2022-11-18 20:18:16,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:16,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-11-18 20:18:16,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:17,128 INFO L130 PetriNetUnfolder]: 159/882 cut-off events. [2022-11-18 20:18:17,129 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-11-18 20:18:17,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 882 events. 159/882 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3195 event pairs, 74 based on Foata normal form. 117/750 useless extension candidates. Maximal degree in co-relation 536. Up to 150 conditions per place. [2022-11-18 20:18:17,147 INFO L137 encePairwiseOnDemand]: 351/390 looper letters, 76 selfloop transitions, 14 changer transitions 11/383 dead transitions. [2022-11-18 20:18:17,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 383 transitions, 982 flow [2022-11-18 20:18:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:18:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:18:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1722 transitions. [2022-11-18 20:18:17,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830769230769231 [2022-11-18 20:18:17,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1722 transitions. [2022-11-18 20:18:17,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1722 transitions. [2022-11-18 20:18:17,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:17,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1722 transitions. [2022-11-18 20:18:17,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.4) internal successors, (1722), 5 states have internal predecessors, (1722), 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) [2022-11-18 20:18:17,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 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) [2022-11-18 20:18:17,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 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) [2022-11-18 20:18:17,226 INFO L175 Difference]: Start difference. First operand has 342 places, 362 transitions, 742 flow. Second operand 5 states and 1722 transitions. [2022-11-18 20:18:17,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 383 transitions, 982 flow [2022-11-18 20:18:17,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 383 transitions, 958 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:18:17,247 INFO L231 Difference]: Finished difference. Result has 341 places, 343 transitions, 774 flow [2022-11-18 20:18:17,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=341, PETRI_TRANSITIONS=343} [2022-11-18 20:18:17,256 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, -1 predicate places. [2022-11-18 20:18:17,256 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 343 transitions, 774 flow [2022-11-18 20:18:17,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 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) [2022-11-18 20:18:17,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:17,259 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:17,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:18:17,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash -513469363, now seen corresponding path program 1 times [2022-11-18 20:18:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:17,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435115820] [2022-11-18 20:18:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:17,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:17,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435115820] [2022-11-18 20:18:17,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435115820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:17,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62629051] [2022-11-18 20:18:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:17,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:17,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:17,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:17,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:18:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:17,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:18:17,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:17,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:17,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62629051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:17,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:17,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:18:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791513392] [2022-11-18 20:18:17,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:17,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:18:17,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:18:17,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:18:17,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-11-18 20:18:17,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 343 transitions, 774 flow. Second operand has 12 states, 12 states have (on average 321.6666666666667) internal successors, (3860), 12 states have internal predecessors, (3860), 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) [2022-11-18 20:18:17,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:17,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-11-18 20:18:17,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:19,157 INFO L130 PetriNetUnfolder]: 396/2034 cut-off events. [2022-11-18 20:18:19,158 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-11-18 20:18:19,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2872 conditions, 2034 events. 396/2034 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11371 event pairs, 185 based on Foata normal form. 9/1473 useless extension candidates. Maximal degree in co-relation 1936. Up to 141 conditions per place. [2022-11-18 20:18:19,181 INFO L137 encePairwiseOnDemand]: 367/390 looper letters, 154 selfloop transitions, 62 changer transitions 0/498 dead transitions. [2022-11-18 20:18:19,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 498 transitions, 1618 flow [2022-11-18 20:18:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:18:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:18:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5967 transitions. [2022-11-18 20:18:19,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-11-18 20:18:19,194 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5967 transitions. [2022-11-18 20:18:19,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5967 transitions. [2022-11-18 20:18:19,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:19,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5967 transitions. [2022-11-18 20:18:19,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 331.5) internal successors, (5967), 18 states have internal predecessors, (5967), 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) [2022-11-18 20:18:19,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 390.0) internal successors, (7410), 19 states have internal predecessors, (7410), 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) [2022-11-18 20:18:19,230 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 390.0) internal successors, (7410), 19 states have internal predecessors, (7410), 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) [2022-11-18 20:18:19,230 INFO L175 Difference]: Start difference. First operand has 341 places, 343 transitions, 774 flow. Second operand 18 states and 5967 transitions. [2022-11-18 20:18:19,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 498 transitions, 1618 flow [2022-11-18 20:18:19,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 498 transitions, 1610 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:18:19,241 INFO L231 Difference]: Finished difference. Result has 350 places, 385 transitions, 1136 flow [2022-11-18 20:18:19,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1136, PETRI_PLACES=350, PETRI_TRANSITIONS=385} [2022-11-18 20:18:19,243 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 8 predicate places. [2022-11-18 20:18:19,243 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 385 transitions, 1136 flow [2022-11-18 20:18:19,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 321.6666666666667) internal successors, (3860), 12 states have internal predecessors, (3860), 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) [2022-11-18 20:18:19,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:19,247 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:19,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:19,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:19,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1262319915, now seen corresponding path program 1 times [2022-11-18 20:18:19,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:19,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118318585] [2022-11-18 20:18:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:19,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:19,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:19,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118318585] [2022-11-18 20:18:19,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118318585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:19,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853287559] [2022-11-18 20:18:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:19,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:19,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:19,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:19,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:18:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:19,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:18:19,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:19,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:18:19,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853287559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:19,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:18:19,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:18:19,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544765586] [2022-11-18 20:18:19,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:19,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:18:19,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:19,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:18:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:18:19,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-11-18 20:18:19,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 385 transitions, 1136 flow. Second operand has 6 states, 6 states have (on average 321.3333333333333) internal successors, (1928), 6 states have internal predecessors, (1928), 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) [2022-11-18 20:18:19,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:19,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-11-18 20:18:19,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:20,667 INFO L130 PetriNetUnfolder]: 396/2022 cut-off events. [2022-11-18 20:18:20,667 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-11-18 20:18:20,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 2022 events. 396/2022 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11290 event pairs, 185 based on Foata normal form. 12/1464 useless extension candidates. Maximal degree in co-relation 2297. Up to 492 conditions per place. [2022-11-18 20:18:20,689 INFO L137 encePairwiseOnDemand]: 373/390 looper letters, 77 selfloop transitions, 43 changer transitions 0/402 dead transitions. [2022-11-18 20:18:20,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 402 transitions, 1365 flow [2022-11-18 20:18:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:18:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:18:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2323 transitions. [2022-11-18 20:18:20,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8509157509157509 [2022-11-18 20:18:20,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2323 transitions. [2022-11-18 20:18:20,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2323 transitions. [2022-11-18 20:18:20,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:20,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2323 transitions. [2022-11-18 20:18:20,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 331.85714285714283) internal successors, (2323), 7 states have internal predecessors, (2323), 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) [2022-11-18 20:18:20,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:20,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:20,708 INFO L175 Difference]: Start difference. First operand has 350 places, 385 transitions, 1136 flow. Second operand 7 states and 2323 transitions. [2022-11-18 20:18:20,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 402 transitions, 1365 flow [2022-11-18 20:18:20,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 402 transitions, 1249 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 20:18:20,720 INFO L231 Difference]: Finished difference. Result has 344 places, 373 transitions, 1025 flow [2022-11-18 20:18:20,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1025, PETRI_PLACES=344, PETRI_TRANSITIONS=373} [2022-11-18 20:18:20,722 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 2 predicate places. [2022-11-18 20:18:20,722 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 373 transitions, 1025 flow [2022-11-18 20:18:20,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.3333333333333) internal successors, (1928), 6 states have internal predecessors, (1928), 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) [2022-11-18 20:18:20,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:20,724 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:20,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:20,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:20,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1498271636, now seen corresponding path program 2 times [2022-11-18 20:18:20,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:20,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302785055] [2022-11-18 20:18:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:20,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:21,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302785055] [2022-11-18 20:18:21,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302785055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:21,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162480076] [2022-11-18 20:18:21,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:18:21,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:21,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:21,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:21,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:18:21,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:18:21,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:21,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:18:21,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:18:21,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:18:21,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162480076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:21,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:21,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:18:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003811787] [2022-11-18 20:18:21,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:18:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:18:21,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:18:21,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 390 [2022-11-18 20:18:21,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 373 transitions, 1025 flow. Second operand has 18 states, 18 states have (on average 295.72222222222223) internal successors, (5323), 18 states have internal predecessors, (5323), 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) [2022-11-18 20:18:21,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:21,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 390 [2022-11-18 20:18:21,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:25,031 INFO L130 PetriNetUnfolder]: 3074/8288 cut-off events. [2022-11-18 20:18:25,032 INFO L131 PetriNetUnfolder]: For 528/528 co-relation queries the response was YES. [2022-11-18 20:18:25,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13178 conditions, 8288 events. 3074/8288 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 65489 event pairs, 1939 based on Foata normal form. 6/5060 useless extension candidates. Maximal degree in co-relation 10765. Up to 707 conditions per place. [2022-11-18 20:18:25,167 INFO L137 encePairwiseOnDemand]: 363/390 looper letters, 260 selfloop transitions, 81 changer transitions 0/596 dead transitions. [2022-11-18 20:18:25,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 596 transitions, 2256 flow [2022-11-18 20:18:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:18:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:18:25,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7355 transitions. [2022-11-18 20:18:25,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7857905982905983 [2022-11-18 20:18:25,183 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7355 transitions. [2022-11-18 20:18:25,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7355 transitions. [2022-11-18 20:18:25,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:25,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7355 transitions. [2022-11-18 20:18:25,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 306.4583333333333) internal successors, (7355), 24 states have internal predecessors, (7355), 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) [2022-11-18 20:18:25,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 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) [2022-11-18 20:18:25,229 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 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) [2022-11-18 20:18:25,229 INFO L175 Difference]: Start difference. First operand has 344 places, 373 transitions, 1025 flow. Second operand 24 states and 7355 transitions. [2022-11-18 20:18:25,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 596 transitions, 2256 flow [2022-11-18 20:18:25,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 596 transitions, 2165 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 20:18:25,250 INFO L231 Difference]: Finished difference. Result has 356 places, 389 transitions, 1188 flow [2022-11-18 20:18:25,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1188, PETRI_PLACES=356, PETRI_TRANSITIONS=389} [2022-11-18 20:18:25,256 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 14 predicate places. [2022-11-18 20:18:25,256 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 389 transitions, 1188 flow [2022-11-18 20:18:25,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 295.72222222222223) internal successors, (5323), 18 states have internal predecessors, (5323), 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) [2022-11-18 20:18:25,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:25,268 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] [2022-11-18 20:18:25,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:18:25,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:25,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:25,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:25,482 INFO L85 PathProgramCache]: Analyzing trace with hash 250782871, now seen corresponding path program 1 times [2022-11-18 20:18:25,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:25,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452204588] [2022-11-18 20:18:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:25,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:25,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:25,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452204588] [2022-11-18 20:18:25,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452204588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:25,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:25,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:18:25,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947880955] [2022-11-18 20:18:25,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:25,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:18:25,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:25,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:18:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:18:25,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 390 [2022-11-18 20:18:25,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 389 transitions, 1188 flow. Second operand has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 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) [2022-11-18 20:18:25,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:25,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 390 [2022-11-18 20:18:25,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:28,100 INFO L130 PetriNetUnfolder]: 2635/7140 cut-off events. [2022-11-18 20:18:28,101 INFO L131 PetriNetUnfolder]: For 549/549 co-relation queries the response was YES. [2022-11-18 20:18:28,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 7140 events. 2635/7140 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 55419 event pairs, 1662 based on Foata normal form. 3/4389 useless extension candidates. Maximal degree in co-relation 1810. Up to 3888 conditions per place. [2022-11-18 20:18:28,159 INFO L137 encePairwiseOnDemand]: 372/390 looper letters, 120 selfloop transitions, 25 changer transitions 0/393 dead transitions. [2022-11-18 20:18:28,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 393 transitions, 1482 flow [2022-11-18 20:18:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:18:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:18:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2167 transitions. [2022-11-18 20:18:28,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.694551282051282 [2022-11-18 20:18:28,165 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2167 transitions. [2022-11-18 20:18:28,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2167 transitions. [2022-11-18 20:18:28,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:28,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2167 transitions. [2022-11-18 20:18:28,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 270.875) internal successors, (2167), 8 states have internal predecessors, (2167), 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) [2022-11-18 20:18:28,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 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) [2022-11-18 20:18:28,180 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 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) [2022-11-18 20:18:28,180 INFO L175 Difference]: Start difference. First operand has 356 places, 389 transitions, 1188 flow. Second operand 8 states and 2167 transitions. [2022-11-18 20:18:28,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 393 transitions, 1482 flow [2022-11-18 20:18:28,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 393 transitions, 1318 flow, removed 12 selfloop flow, removed 16 redundant places. [2022-11-18 20:18:28,192 INFO L231 Difference]: Finished difference. Result has 348 places, 387 transitions, 1072 flow [2022-11-18 20:18:28,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1072, PETRI_PLACES=348, PETRI_TRANSITIONS=387} [2022-11-18 20:18:28,195 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 6 predicate places. [2022-11-18 20:18:28,196 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 387 transitions, 1072 flow [2022-11-18 20:18:28,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 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) [2022-11-18 20:18:28,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:28,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:28,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:18:28,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:28,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:28,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1939363022, now seen corresponding path program 1 times [2022-11-18 20:18:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:28,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688172778] [2022-11-18 20:18:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:29,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688172778] [2022-11-18 20:18:29,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688172778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:29,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415292137] [2022-11-18 20:18:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:29,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:29,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:29,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:18:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:29,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 20:18:29,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:29,768 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 [2022-11-18 20:18:29,896 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 [2022-11-18 20:18:30,065 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:18:30,066 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 [2022-11-18 20:18:30,114 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 [2022-11-18 20:18:30,171 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 [2022-11-18 20:18:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:30,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:31,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:31,109 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 24 treesize of output 25 [2022-11-18 20:18:31,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:31,122 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 38 treesize of output 36 [2022-11-18 20:18:31,130 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 11 treesize of output 9 [2022-11-18 20:18:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:31,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415292137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:31,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:31,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2022-11-18 20:18:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125582082] [2022-11-18 20:18:31,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:31,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:18:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:31,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:18:31,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1052, Unknown=14, NotChecked=0, Total=1190 [2022-11-18 20:18:31,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 390 [2022-11-18 20:18:31,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 387 transitions, 1072 flow. Second operand has 35 states, 35 states have (on average 243.28571428571428) internal successors, (8515), 35 states have internal predecessors, (8515), 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) [2022-11-18 20:18:31,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:31,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 390 [2022-11-18 20:18:31,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:46,177 INFO L130 PetriNetUnfolder]: 19663/47628 cut-off events. [2022-11-18 20:18:46,178 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2022-11-18 20:18:46,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74198 conditions, 47628 events. 19663/47628 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 515942 event pairs, 10968 based on Foata normal form. 0/31188 useless extension candidates. Maximal degree in co-relation 54480. Up to 6402 conditions per place. [2022-11-18 20:18:46,673 INFO L137 encePairwiseOnDemand]: 345/390 looper letters, 347 selfloop transitions, 81 changer transitions 0/648 dead transitions. [2022-11-18 20:18:46,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 648 transitions, 2539 flow [2022-11-18 20:18:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:18:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 20:18:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 9266 transitions. [2022-11-18 20:18:46,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6421344421344422 [2022-11-18 20:18:46,696 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 9266 transitions. [2022-11-18 20:18:46,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 9266 transitions. [2022-11-18 20:18:46,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:46,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 9266 transitions. [2022-11-18 20:18:46,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 250.43243243243242) internal successors, (9266), 37 states have internal predecessors, (9266), 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) [2022-11-18 20:18:46,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 390.0) internal successors, (14820), 38 states have internal predecessors, (14820), 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) [2022-11-18 20:18:46,756 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 390.0) internal successors, (14820), 38 states have internal predecessors, (14820), 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) [2022-11-18 20:18:46,757 INFO L175 Difference]: Start difference. First operand has 348 places, 387 transitions, 1072 flow. Second operand 37 states and 9266 transitions. [2022-11-18 20:18:46,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 648 transitions, 2539 flow [2022-11-18 20:18:46,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 648 transitions, 2485 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:18:46,775 INFO L231 Difference]: Finished difference. Result has 398 places, 442 transitions, 1474 flow [2022-11-18 20:18:46,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1474, PETRI_PLACES=398, PETRI_TRANSITIONS=442} [2022-11-18 20:18:46,780 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 56 predicate places. [2022-11-18 20:18:46,780 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 442 transitions, 1474 flow [2022-11-18 20:18:46,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 243.28571428571428) internal successors, (8515), 35 states have internal predecessors, (8515), 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) [2022-11-18 20:18:46,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:46,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:46,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:46,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:46,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash 9289303, now seen corresponding path program 1 times [2022-11-18 20:18:46,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:46,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777301784] [2022-11-18 20:18:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:46,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:18:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:47,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777301784] [2022-11-18 20:18:47,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777301784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:47,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:47,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896400148] [2022-11-18 20:18:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:47,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:47,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:47,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:47,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-11-18 20:18:47,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 442 transitions, 1474 flow. Second operand has 4 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 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) [2022-11-18 20:18:47,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:47,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-11-18 20:18:47,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:50,101 INFO L130 PetriNetUnfolder]: 2239/9294 cut-off events. [2022-11-18 20:18:50,101 INFO L131 PetriNetUnfolder]: For 944/944 co-relation queries the response was YES. [2022-11-18 20:18:50,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14257 conditions, 9294 events. 2239/9294 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 88173 event pairs, 1110 based on Foata normal form. 36/6300 useless extension candidates. Maximal degree in co-relation 13812. Up to 2287 conditions per place. [2022-11-18 20:18:50,223 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 86 selfloop transitions, 10 changer transitions 0/466 dead transitions. [2022-11-18 20:18:50,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 466 transitions, 1701 flow [2022-11-18 20:18:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:18:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:18:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1327 transitions. [2022-11-18 20:18:50,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8506410256410256 [2022-11-18 20:18:50,228 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1327 transitions. [2022-11-18 20:18:50,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1327 transitions. [2022-11-18 20:18:50,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:50,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1327 transitions. [2022-11-18 20:18:50,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.75) internal successors, (1327), 4 states have internal predecessors, (1327), 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) [2022-11-18 20:18:50,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 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) [2022-11-18 20:18:50,237 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 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) [2022-11-18 20:18:50,237 INFO L175 Difference]: Start difference. First operand has 398 places, 442 transitions, 1474 flow. Second operand 4 states and 1327 transitions. [2022-11-18 20:18:50,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 466 transitions, 1701 flow [2022-11-18 20:18:50,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 466 transitions, 1695 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:18:50,254 INFO L231 Difference]: Finished difference. Result has 400 places, 440 transitions, 1499 flow [2022-11-18 20:18:50,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1499, PETRI_PLACES=400, PETRI_TRANSITIONS=440} [2022-11-18 20:18:50,256 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 58 predicate places. [2022-11-18 20:18:50,256 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 440 transitions, 1499 flow [2022-11-18 20:18:50,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 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) [2022-11-18 20:18:50,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:50,258 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:50,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:18:50,258 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1757128638, now seen corresponding path program 2 times [2022-11-18 20:18:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:50,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720879895] [2022-11-18 20:18:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:50,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:50,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720879895] [2022-11-18 20:18:50,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720879895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:50,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431456702] [2022-11-18 20:18:50,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:18:50,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:50,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:50,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:50,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:18:51,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:18:51,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:51,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:18:51,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:51,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:18:52,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431456702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:52,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:18:52,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-18 20:18:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467467292] [2022-11-18 20:18:52,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:52,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:18:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:18:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:18:52,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 390 [2022-11-18 20:18:52,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 440 transitions, 1499 flow. Second operand has 32 states, 32 states have (on average 299.09375) internal successors, (9571), 32 states have internal predecessors, (9571), 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) [2022-11-18 20:18:52,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:52,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 390 [2022-11-18 20:18:52,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:18:58,964 INFO L130 PetriNetUnfolder]: 7385/18970 cut-off events. [2022-11-18 20:18:58,964 INFO L131 PetriNetUnfolder]: For 1085/1085 co-relation queries the response was YES. [2022-11-18 20:18:59,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30849 conditions, 18970 events. 7385/18970 cut-off events. For 1085/1085 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 181867 event pairs, 4709 based on Foata normal form. 4/11338 useless extension candidates. Maximal degree in co-relation 26900. Up to 9190 conditions per place. [2022-11-18 20:18:59,182 INFO L137 encePairwiseOnDemand]: 364/390 looper letters, 103 selfloop transitions, 99 changer transitions 0/490 dead transitions. [2022-11-18 20:18:59,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 490 transitions, 2038 flow [2022-11-18 20:18:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:18:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 20:18:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 8717 transitions. [2022-11-18 20:18:59,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7707338638373121 [2022-11-18 20:18:59,201 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 8717 transitions. [2022-11-18 20:18:59,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 8717 transitions. [2022-11-18 20:18:59,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:18:59,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 8717 transitions. [2022-11-18 20:18:59,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 300.58620689655174) internal successors, (8717), 29 states have internal predecessors, (8717), 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) [2022-11-18 20:18:59,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 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) [2022-11-18 20:18:59,255 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 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) [2022-11-18 20:18:59,255 INFO L175 Difference]: Start difference. First operand has 400 places, 440 transitions, 1499 flow. Second operand 29 states and 8717 transitions. [2022-11-18 20:18:59,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 490 transitions, 2038 flow [2022-11-18 20:18:59,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 490 transitions, 2024 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-18 20:18:59,278 INFO L231 Difference]: Finished difference. Result has 422 places, 444 transitions, 1754 flow [2022-11-18 20:18:59,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1754, PETRI_PLACES=422, PETRI_TRANSITIONS=444} [2022-11-18 20:18:59,282 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 80 predicate places. [2022-11-18 20:18:59,282 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 444 transitions, 1754 flow [2022-11-18 20:18:59,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 299.09375) internal successors, (9571), 32 states have internal predecessors, (9571), 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) [2022-11-18 20:18:59,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:18:59,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:59,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:18:59,493 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:18:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash 784102486, now seen corresponding path program 1 times [2022-11-18 20:18:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49397267] [2022-11-18 20:18:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:59,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:18:59,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:59,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49397267] [2022-11-18 20:18:59,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49397267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:18:59,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:18:59,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:18:59,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256841288] [2022-11-18 20:18:59,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:18:59,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:18:59,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:59,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:18:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:18:59,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-11-18 20:18:59,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 444 transitions, 1754 flow. Second operand has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-18 20:18:59,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:18:59,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-11-18 20:18:59,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:01,516 INFO L130 PetriNetUnfolder]: 1264/5562 cut-off events. [2022-11-18 20:19:01,516 INFO L131 PetriNetUnfolder]: For 837/837 co-relation queries the response was YES. [2022-11-18 20:19:01,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8820 conditions, 5562 events. 1264/5562 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 44501 event pairs, 629 based on Foata normal form. 12/3854 useless extension candidates. Maximal degree in co-relation 7327. Up to 1408 conditions per place. [2022-11-18 20:19:01,562 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 82 selfloop transitions, 8 changer transitions 0/468 dead transitions. [2022-11-18 20:19:01,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 468 transitions, 1980 flow [2022-11-18 20:19:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2022-11-18 20:19:01,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8480769230769231 [2022-11-18 20:19:01,565 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2022-11-18 20:19:01,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2022-11-18 20:19:01,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:01,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2022-11-18 20:19:01,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:19:01,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 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) [2022-11-18 20:19:01,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 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) [2022-11-18 20:19:01,573 INFO L175 Difference]: Start difference. First operand has 422 places, 444 transitions, 1754 flow. Second operand 4 states and 1323 transitions. [2022-11-18 20:19:01,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 468 transitions, 1980 flow [2022-11-18 20:19:01,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 468 transitions, 1849 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-11-18 20:19:01,589 INFO L231 Difference]: Finished difference. Result has 413 places, 442 transitions, 1627 flow [2022-11-18 20:19:01,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1627, PETRI_PLACES=413, PETRI_TRANSITIONS=442} [2022-11-18 20:19:01,591 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 71 predicate places. [2022-11-18 20:19:01,591 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 442 transitions, 1627 flow [2022-11-18 20:19:01,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 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) [2022-11-18 20:19:01,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:01,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:01,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:19:01,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:19:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:01,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1462625833, now seen corresponding path program 1 times [2022-11-18 20:19:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:01,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437170346] [2022-11-18 20:19:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:01,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:02,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:02,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437170346] [2022-11-18 20:19:02,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437170346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:02,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618469986] [2022-11-18 20:19:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:02,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:02,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:02,528 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:02,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:19:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:02,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 20:19:02,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:02,717 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 [2022-11-18 20:19:02,816 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 [2022-11-18 20:19:02,968 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:19:02,969 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 [2022-11-18 20:19:03,001 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 14 treesize of output 16 [2022-11-18 20:19:03,050 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 15 treesize of output 7 [2022-11-18 20:19:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:19:03,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:03,237 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_262) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-11-18 20:19:03,258 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_262) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-11-18 20:19:03,716 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:03,716 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 22 treesize of output 23 [2022-11-18 20:19:03,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:03,725 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 34 treesize of output 32 [2022-11-18 20:19:03,730 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 9 treesize of output 7 [2022-11-18 20:19:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-18 20:19:03,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618469986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:03,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:03,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2022-11-18 20:19:03,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107049838] [2022-11-18 20:19:03,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:19:03,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:19:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=993, Unknown=7, NotChecked=130, Total=1260 [2022-11-18 20:19:03,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 390 [2022-11-18 20:19:03,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 442 transitions, 1627 flow. Second operand has 36 states, 36 states have (on average 243.38888888888889) internal successors, (8762), 36 states have internal predecessors, (8762), 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) [2022-11-18 20:19:03,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:03,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 390 [2022-11-18 20:19:03,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:14,405 INFO L130 PetriNetUnfolder]: 13912/33849 cut-off events. [2022-11-18 20:19:14,405 INFO L131 PetriNetUnfolder]: For 545/545 co-relation queries the response was YES. [2022-11-18 20:19:14,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53277 conditions, 33849 events. 13912/33849 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 343907 event pairs, 7769 based on Foata normal form. 0/22253 useless extension candidates. Maximal degree in co-relation 46579. Up to 10558 conditions per place. [2022-11-18 20:19:14,775 INFO L137 encePairwiseOnDemand]: 342/390 looper letters, 227 selfloop transitions, 72 changer transitions 0/525 dead transitions. [2022-11-18 20:19:14,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 525 transitions, 2447 flow [2022-11-18 20:19:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:19:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:19:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7938 transitions. [2022-11-18 20:19:14,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6360576923076923 [2022-11-18 20:19:14,789 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7938 transitions. [2022-11-18 20:19:14,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7938 transitions. [2022-11-18 20:19:14,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:14,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7938 transitions. [2022-11-18 20:19:14,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 248.0625) internal successors, (7938), 32 states have internal predecessors, (7938), 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) [2022-11-18 20:19:14,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 390.0) internal successors, (12870), 33 states have internal predecessors, (12870), 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) [2022-11-18 20:19:14,830 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 390.0) internal successors, (12870), 33 states have internal predecessors, (12870), 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) [2022-11-18 20:19:14,830 INFO L175 Difference]: Start difference. First operand has 413 places, 442 transitions, 1627 flow. Second operand 32 states and 7938 transitions. [2022-11-18 20:19:14,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 525 transitions, 2447 flow [2022-11-18 20:19:14,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 525 transitions, 2430 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:19:14,848 INFO L231 Difference]: Finished difference. Result has 447 places, 448 transitions, 1839 flow [2022-11-18 20:19:14,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1839, PETRI_PLACES=447, PETRI_TRANSITIONS=448} [2022-11-18 20:19:14,850 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 105 predicate places. [2022-11-18 20:19:14,850 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 448 transitions, 1839 flow [2022-11-18 20:19:14,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 243.38888888888889) internal successors, (8762), 36 states have internal predecessors, (8762), 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) [2022-11-18 20:19:14,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:14,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:14,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 20:19:15,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:19:15,064 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:19:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash 701377058, now seen corresponding path program 1 times [2022-11-18 20:19:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:15,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799580089] [2022-11-18 20:19:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:19:15,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:15,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799580089] [2022-11-18 20:19:15,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799580089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:19:15,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:19:15,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:19:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575392828] [2022-11-18 20:19:15,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:19:15,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:19:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:19:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:19:15,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-11-18 20:19:15,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 448 transitions, 1839 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 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) [2022-11-18 20:19:15,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:15,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-11-18 20:19:15,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:19:16,742 INFO L130 PetriNetUnfolder]: 1337/5810 cut-off events. [2022-11-18 20:19:16,742 INFO L131 PetriNetUnfolder]: For 1002/1002 co-relation queries the response was YES. [2022-11-18 20:19:16,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9323 conditions, 5810 events. 1337/5810 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 46816 event pairs, 666 based on Foata normal form. 12/4016 useless extension candidates. Maximal degree in co-relation 7902. Up to 1548 conditions per place. [2022-11-18 20:19:16,796 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 81 selfloop transitions, 8 changer transitions 0/472 dead transitions. [2022-11-18 20:19:16,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 472 transitions, 2066 flow [2022-11-18 20:19:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:19:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:19:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1319 transitions. [2022-11-18 20:19:16,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8455128205128205 [2022-11-18 20:19:16,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1319 transitions. [2022-11-18 20:19:16,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1319 transitions. [2022-11-18 20:19:16,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:19:16,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1319 transitions. [2022-11-18 20:19:16,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 329.75) internal successors, (1319), 4 states have internal predecessors, (1319), 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) [2022-11-18 20:19:16,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 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) [2022-11-18 20:19:16,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 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) [2022-11-18 20:19:16,805 INFO L175 Difference]: Start difference. First operand has 447 places, 448 transitions, 1839 flow. Second operand 4 states and 1319 transitions. [2022-11-18 20:19:16,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 472 transitions, 2066 flow [2022-11-18 20:19:16,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 472 transitions, 1961 flow, removed 1 selfloop flow, removed 27 redundant places. [2022-11-18 20:19:16,826 INFO L231 Difference]: Finished difference. Result has 423 places, 448 transitions, 1761 flow [2022-11-18 20:19:16,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1761, PETRI_PLACES=423, PETRI_TRANSITIONS=448} [2022-11-18 20:19:16,827 INFO L288 CegarLoopForPetriNet]: 342 programPoint places, 81 predicate places. [2022-11-18 20:19:16,827 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 448 transitions, 1761 flow [2022-11-18 20:19:16,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 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) [2022-11-18 20:19:16,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:19:16,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:19:16,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:19:16,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 20:19:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:19:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1132931097, now seen corresponding path program 1 times [2022-11-18 20:19:16,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:19:16,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348244577] [2022-11-18 20:19:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:16,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:19:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:19:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348244577] [2022-11-18 20:19:19,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348244577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:19:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067051554] [2022-11-18 20:19:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:19:19,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:19:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:19:19,776 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:19:19,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0d76c3c-6530-4f86-9cad-6bf1a0e47255/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:19:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:19:19,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 20:19:19,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:19:19,960 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 [2022-11-18 20:19:20,155 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 [2022-11-18 20:19:20,518 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:19:20,519 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 [2022-11-18 20:19:20,685 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 14 treesize of output 16 [2022-11-18 20:19:20,839 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:19:20,840 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 [2022-11-18 20:19:20,977 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 14 treesize of output 16 [2022-11-18 20:19:21,018 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 15 treesize of output 7 [2022-11-18 20:19:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:19:21,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:19:21,757 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_322) c_~A~0.base) c_~A~0.offset) 2147483647)) is different from false [2022-11-18 20:19:22,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:22,950 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 22 treesize of output 23 [2022-11-18 20:19:22,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:19:22,959 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 34 treesize of output 32 [2022-11-18 20:19:22,965 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 9 treesize of output 7 [2022-11-18 20:19:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:19:23,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067051554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:19:23,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:19:23,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 22, 22] total 68 [2022-11-18 20:19:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502005224] [2022-11-18 20:19:23,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:19:23,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-18 20:19:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:19:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-18 20:19:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=4246, Unknown=23, NotChecked=132, Total=4692 [2022-11-18 20:19:23,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 390 [2022-11-18 20:19:23,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 448 transitions, 1761 flow. Second operand has 69 states, 69 states have (on average 141.2463768115942) internal successors, (9746), 69 states have internal predecessors, (9746), 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) [2022-11-18 20:19:23,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:19:23,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 390 [2022-11-18 20:19:23,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand