./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e9492584c051c945baa3a1de8b03a2c00614fb076a66c88b26b81461b005eeb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:31:19,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:31:19,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:31:19,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:31:19,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:31:19,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:31:19,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:31:19,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:31:19,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:31:19,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:31:19,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:31:19,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:31:19,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:31:19,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:31:19,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:31:19,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:31:19,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:31:19,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:31:19,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:31:19,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:31:19,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:31:19,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:31:19,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:31:19,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:31:19,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:31:19,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:31:19,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:31:19,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:31:19,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:31:19,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:31:19,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:31:19,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:31:19,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:31:19,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:31:19,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:31:19,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:31:19,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:31:19,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:31:19,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:31:19,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:31:19,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:31:19,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:31:19,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:31:19,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:31:19,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:31:19,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:31:19,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:31:19,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:31:19,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:31:19,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:31:19,889 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:31:19,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:31:19,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:31:19,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:31:19,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:31:19,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:31:19,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:31:19,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:31:19,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:31:19,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:31:19,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:31:19,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:31:19,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:31:19,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:31:19,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:31:19,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:31:19,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:31:19,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:31:19,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:31:19,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:31:19,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:31:19,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:31:19,897 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:31:19,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:31:19,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:31:19,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:31:19,898 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_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e9492584c051c945baa3a1de8b03a2c00614fb076a66c88b26b81461b005eeb [2021-11-19 05:31:20,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:31:20,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:31:20,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:31:20,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:31:20,286 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:31:20,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2021-11-19 05:31:20,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/data/a37a73eca/b85c7f19d7ee4876bb5fb3c67dc354bc/FLAGbde2c1f59 [2021-11-19 05:31:20,925 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:31:20,926 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2021-11-19 05:31:20,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/data/a37a73eca/b85c7f19d7ee4876bb5fb3c67dc354bc/FLAGbde2c1f59 [2021-11-19 05:31:21,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/data/a37a73eca/b85c7f19d7ee4876bb5fb3c67dc354bc [2021-11-19 05:31:21,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:31:21,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:31:21,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:31:21,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:31:21,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:31:21,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc99cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21, skipping insertion in model container [2021-11-19 05:31:21,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:31:21,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:31:21,509 WARN L230 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_4603ee21-35a8-4fbc-a64a-d34560673683/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c[524,537] [2021-11-19 05:31:21,534 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:31:21,545 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:31:21,558 WARN L230 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_4603ee21-35a8-4fbc-a64a-d34560673683/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c[524,537] [2021-11-19 05:31:21,568 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:31:21,582 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:31:21,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21 WrapperNode [2021-11-19 05:31:21,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:31:21,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:31:21,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:31:21,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:31:21,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,621 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2021-11-19 05:31:21,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:31:21,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:31:21,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:31:21,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:31:21,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:31:21,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:31:21,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:31:21,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:31:21,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (1/1) ... [2021-11-19 05:31:21,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:31:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:31:21,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:31:21,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:31:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:31:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:31:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:31:21,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:31:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:31:21,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:31:21,786 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:31:21,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:31:21,935 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:31:21,942 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:31:21,943 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:31:21,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:31:21 BoogieIcfgContainer [2021-11-19 05:31:21,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:31:21,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:31:21,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:31:21,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:31:21,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:31:21" (1/3) ... [2021-11-19 05:31:21,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514d1d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:31:21, skipping insertion in model container [2021-11-19 05:31:21,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:31:21" (2/3) ... [2021-11-19 05:31:21,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514d1d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:31:21, skipping insertion in model container [2021-11-19 05:31:21,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:31:21" (3/3) ... [2021-11-19 05:31:21,973 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound1.c [2021-11-19 05:31:21,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:31:21,979 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:31:22,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:31:22,100 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:31:22,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:31:22,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:31:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 05:31:22,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:31:22,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:31:22,143 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:31:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:31:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash -563977895, now seen corresponding path program 1 times [2021-11-19 05:31:22,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:31:22,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696773546] [2021-11-19 05:31:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:22,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:31:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:31:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:22,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:31:22,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696773546] [2021-11-19 05:31:22,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696773546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:31:22,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:31:22,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:31:22,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912120195] [2021-11-19 05:31:22,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:31:22,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:31:22,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:31:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:31:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:31:22,414 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:31:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:31:22,444 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2021-11-19 05:31:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:31:22,448 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 05:31:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:31:22,458 INFO L225 Difference]: With dead ends: 43 [2021-11-19 05:31:22,458 INFO L226 Difference]: Without dead ends: 19 [2021-11-19 05:31:22,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:31:22,472 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:31:22,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:31:22,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-19 05:31:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-19 05:31:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:31:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-19 05:31:22,535 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2021-11-19 05:31:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:31:22,537 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-19 05:31:22,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:31:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-19 05:31:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:31:22,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:31:22,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:31:22,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:31:22,541 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:31:22,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:31:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1986058659, now seen corresponding path program 1 times [2021-11-19 05:31:22,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:31:22,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368795684] [2021-11-19 05:31:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:22,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:31:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:31:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:22,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:31:22,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368795684] [2021-11-19 05:31:22,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368795684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:31:22,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:31:22,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:31:22,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579577161] [2021-11-19 05:31:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:31:22,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:31:22,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:31:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:31:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:31:22,662 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:31:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:31:22,692 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-11-19 05:31:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:31:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 05:31:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:31:22,694 INFO L225 Difference]: With dead ends: 29 [2021-11-19 05:31:22,695 INFO L226 Difference]: Without dead ends: 21 [2021-11-19 05:31:22,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:31:22,698 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:31:22,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:31:22,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-19 05:31:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-19 05:31:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:31:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2021-11-19 05:31:22,714 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 10 [2021-11-19 05:31:22,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:31:22,716 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-11-19 05:31:22,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:31:22,717 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2021-11-19 05:31:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:31:22,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:31:22,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:31:22,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:31:22,722 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:31:22,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:31:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1984271199, now seen corresponding path program 1 times [2021-11-19 05:31:22,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:31:22,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980345373] [2021-11-19 05:31:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:22,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:31:22,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:31:22,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372310910] [2021-11-19 05:31:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:22,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:31:22,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:31:22,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:31:22,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:31:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:31:22,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 05:31:22,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:31:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:23,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:31:23,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:31:23,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980345373] [2021-11-19 05:31:23,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:31:23,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372310910] [2021-11-19 05:31:23,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372310910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:31:23,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:31:23,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:31:23,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896997924] [2021-11-19 05:31:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:31:23,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:31:23,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:31:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:31:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:31:23,030 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:31:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:31:23,149 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2021-11-19 05:31:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:31:23,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 05:31:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:31:23,155 INFO L225 Difference]: With dead ends: 34 [2021-11-19 05:31:23,155 INFO L226 Difference]: Without dead ends: 32 [2021-11-19 05:31:23,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:31:23,160 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:31:23,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:31:23,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-19 05:31:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-11-19 05:31:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:31:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-19 05:31:23,182 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 10 [2021-11-19 05:31:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:31:23,183 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-19 05:31:23,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:31:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-19 05:31:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:31:23,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:31:23,185 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:31:23,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:31:23,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:31:23,411 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:31:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:31:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1194524114, now seen corresponding path program 1 times [2021-11-19 05:31:23,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:31:23,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059637508] [2021-11-19 05:31:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:23,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:31:23,434 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:31:23,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446940758] [2021-11-19 05:31:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:23,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:31:23,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:31:23,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:31:23,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:31:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:31:23,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 05:31:23,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:31:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:24,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:31:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:31:24,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:31:24,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059637508] [2021-11-19 05:31:24,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 05:31:24,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446940758] [2021-11-19 05:31:24,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446940758] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:31:24,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:31:24,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2021-11-19 05:31:24,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455297073] [2021-11-19 05:31:24,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:31:24,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:31:24,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:31:24,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:31:24,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:31:24,282 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:31:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:31:24,840 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2021-11-19 05:31:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:31:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-19 05:31:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:31:24,844 INFO L225 Difference]: With dead ends: 47 [2021-11-19 05:31:24,844 INFO L226 Difference]: Without dead ends: 45 [2021-11-19 05:31:24,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:31:24,846 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:31:24,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 101 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:31:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-19 05:31:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2021-11-19 05:31:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 05:31:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-11-19 05:31:24,855 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2021-11-19 05:31:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:31:24,856 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-19 05:31:24,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:31:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-11-19 05:31:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:31:24,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:31:24,857 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:31:24,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:31:25,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:31:25,071 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:31:25,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:31:25,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1756733383, now seen corresponding path program 1 times [2021-11-19 05:31:25,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:31:25,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232056791] [2021-11-19 05:31:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:25,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:31:25,087 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 05:31:25,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693520793] [2021-11-19 05:31:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:31:25,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:31:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:31:25,094 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:31:25,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:31:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:31:25,171 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:31:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:31:25,209 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:31:25,209 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:31:25,210 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:31:25,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:31:25,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:31:25,430 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-19 05:31:25,433 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:31:25,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:31:25 BoogieIcfgContainer [2021-11-19 05:31:25,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:31:25,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:31:25,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:31:25,469 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:31:25,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:31:21" (3/4) ... [2021-11-19 05:31:25,472 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:31:25,549 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:31:25,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:31:25,551 INFO L158 Benchmark]: Toolchain (without parser) took 4248.99ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 63.6MB in the beginning and 91.8MB in the end (delta: -28.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:31:25,552 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 94.4MB. Free memory was 50.8MB in the beginning and 50.8MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:31:25,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.39ms. Allocated memory is still 94.4MB. Free memory was 63.2MB in the beginning and 69.7MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:31:25,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.41ms. Allocated memory is still 94.4MB. Free memory was 69.7MB in the beginning and 68.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:31:25,553 INFO L158 Benchmark]: Boogie Preprocessor took 24.56ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 67.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:31:25,553 INFO L158 Benchmark]: RCFGBuilder took 297.56ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 57.0MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:31:25,554 INFO L158 Benchmark]: TraceAbstraction took 3520.80ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 56.7MB in the beginning and 93.9MB in the end (delta: -37.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:31:25,554 INFO L158 Benchmark]: Witness Printer took 81.34ms. Allocated memory is still 123.7MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:31:25,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 94.4MB. Free memory was 50.8MB in the beginning and 50.8MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.39ms. Allocated memory is still 94.4MB. Free memory was 63.2MB in the beginning and 69.7MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.41ms. Allocated memory is still 94.4MB. Free memory was 69.7MB in the beginning and 68.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.56ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 67.1MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.56ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 57.0MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3520.80ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 56.7MB in the beginning and 93.9MB in the end (delta: -37.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 81.34ms. Allocated memory is still 123.7MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [a=2, b=2, counter=0, p=1, q=0, x=2, y=2] [L33] EXPR counter++ VAL [a=2, b=2, counter=1, counter++=0, p=1, q=0, x=2, y=2] [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [a=2, b=2, counter=1, p=1, q=0, x=2, y=2] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [a=2, b=2, counter=1, p=1, q=0, x=2, y=2] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [a=1, b=1, counter=1, p=4, q=0, x=2, y=2] [L33] EXPR counter++ VAL [a=1, b=1, counter=2, counter++=1, p=4, q=0, x=2, y=2] [L33] COND FALSE !(counter++<1) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, counter=2] [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L14] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 251 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 170 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 238 IncrementalHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 81 mSDtfsCounter, 238 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 SizeOfPredicates, 12 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 05:31:25,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4603ee21-35a8-4fbc-a64a-d34560673683/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE