./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bor3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/bor3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc --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 f1b6ac589e17a1425c18d8694ea032f5464d66d6d18c040a40e1edc53bc0f3c5 --- 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-5e519f3 [2022-11-02 20:15:55,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:15:55,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:15:55,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:15:55,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:15:55,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:15:55,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:15:55,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:15:55,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:15:55,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:15:55,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:15:55,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:15:55,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:15:55,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:15:55,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:15:55,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:15:55,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:15:55,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:15:55,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:15:55,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:15:55,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:15:55,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:15:55,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:15:55,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:15:55,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:15:55,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:15:55,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:15:55,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:15:55,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:15:55,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:15:55,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:15:55,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:15:55,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:15:55,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:15:55,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:15:55,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:15:55,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:15:55,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:15:55,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:15:55,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:15:55,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:15:55,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:15:55,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:15:55,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:15:55,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:15:55,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:15:55,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:15:55,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:15:55,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:15:55,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:15:55,522 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:15:55,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:15:55,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:15:55,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:15:55,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:15:55,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:15:55,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:15:55,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:15:55,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:15:55,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:15:55,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:15:55,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:15:55,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:15:55,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:15:55,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:15:55,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:15:55,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:15:55,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:15:55,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:15:55,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:15:55,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:15:55,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:15:55,528 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:15:55,529 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:15:55,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:15:55,529 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_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b6ac589e17a1425c18d8694ea032f5464d66d6d18c040a40e1edc53bc0f3c5 [2022-11-02 20:15:55,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:15:55,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:15:55,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:15:55,814 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:15:55,814 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:15:55,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-crafted/bor3.i [2022-11-02 20:15:55,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/data/3ee641417/99ac04f40e834144aff02ded7dda2226/FLAG930e0fd0e [2022-11-02 20:15:56,339 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:15:56,340 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/sv-benchmarks/c/array-crafted/bor3.i [2022-11-02 20:15:56,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/data/3ee641417/99ac04f40e834144aff02ded7dda2226/FLAG930e0fd0e [2022-11-02 20:15:56,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/data/3ee641417/99ac04f40e834144aff02ded7dda2226 [2022-11-02 20:15:56,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:15:56,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:15:56,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:15:56,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:15:56,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:15:56,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f55e62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56, skipping insertion in model container [2022-11-02 20:15:56,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:15:56,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:15:57,031 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_4bb5d99e-de6a-4f5d-8484-574cd0420f33/sv-benchmarks/c/array-crafted/bor3.i[1297,1310] [2022-11-02 20:15:57,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:15:57,050 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:15:57,087 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_4bb5d99e-de6a-4f5d-8484-574cd0420f33/sv-benchmarks/c/array-crafted/bor3.i[1297,1310] [2022-11-02 20:15:57,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:15:57,106 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:15:57,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57 WrapperNode [2022-11-02 20:15:57,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:15:57,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:15:57,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:15:57,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:15:57,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,170 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2022-11-02 20:15:57,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:15:57,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:15:57,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:15:57,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:15:57,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,212 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:15:57,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:15:57,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:15:57,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:15:57,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (1/1) ... [2022-11-02 20:15:57,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:15:57,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:57,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:15:57,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:15:57,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:15:57,301 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2022-11-02 20:15:57,301 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2022-11-02 20:15:57,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:15:57,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:15:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:15:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:15:57,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:15:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:15:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:15:57,377 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:15:57,380 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:15:57,536 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:15:57,542 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:15:57,543 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:15:57,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:57 BoogieIcfgContainer [2022-11-02 20:15:57,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:15:57,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:15:57,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:15:57,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:15:57,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:15:56" (1/3) ... [2022-11-02 20:15:57,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b28be10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:15:57, skipping insertion in model container [2022-11-02 20:15:57,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:57" (2/3) ... [2022-11-02 20:15:57,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b28be10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:15:57, skipping insertion in model container [2022-11-02 20:15:57,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:57" (3/3) ... [2022-11-02 20:15:57,553 INFO L112 eAbstractionObserver]: Analyzing ICFG bor3.i [2022-11-02 20:15:57,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:15:57,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:15:57,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:15:57,702 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;@462e3cff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:15:57,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:15:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 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) [2022-11-02 20:15:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:15:57,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:57,717 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:57,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:57,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2022-11-02 20:15:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:57,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726978778] [2022-11-02 20:15:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:57,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:15:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:15:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:15:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:15:58,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:58,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726978778] [2022-11-02 20:15:58,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726978778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:58,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217301370] [2022-11-02 20:15:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:58,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:58,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:58,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:58,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:15:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:15:58,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:15:58,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:58,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217301370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:58,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:15:58,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 20:15:58,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412695951] [2022-11-02 20:15:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:58,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:58,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:58,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:58,379 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 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 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:15:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:58,425 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-02 20:15:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:58,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-02 20:15:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:58,439 INFO L225 Difference]: With dead ends: 50 [2022-11-02 20:15:58,439 INFO L226 Difference]: Without dead ends: 24 [2022-11-02 20:15:58,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:58,445 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:58,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:15:58,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-02 20:15:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-02 20:15:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-11-02 20:15:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-02 20:15:58,478 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2022-11-02 20:15:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:58,479 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-02 20:15:58,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:15:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-02 20:15:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 20:15:58,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:58,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:58,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:15:58,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 20:15:58,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:58,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 202333565, now seen corresponding path program 1 times [2022-11-02 20:15:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:58,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88461564] [2022-11-02 20:15:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:15:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:15:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:15:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:15:58,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:58,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88461564] [2022-11-02 20:15:58,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88461564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:58,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445692172] [2022-11-02 20:15:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:58,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:58,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:58,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:58,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:15:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:15:59,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:15:59,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:59,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445692172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:59,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:15:59,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-02 20:15:59,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164075250] [2022-11-02 20:15:59,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:59,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:59,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:59,034 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:15:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:59,055 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-02 20:15:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:59,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-02 20:15:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:59,056 INFO L225 Difference]: With dead ends: 42 [2022-11-02 20:15:59,057 INFO L226 Difference]: Without dead ends: 25 [2022-11-02 20:15:59,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:15:59,059 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:59,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:15:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-02 20:15:59,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-02 20:15:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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) [2022-11-02 20:15:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-02 20:15:59,065 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2022-11-02 20:15:59,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:59,065 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-02 20:15:59,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:15:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-02 20:15:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:15:59,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:59,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:59,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:59,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:59,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:59,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -796008709, now seen corresponding path program 1 times [2022-11-02 20:15:59,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:59,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691745444] [2022-11-02 20:15:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:59,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:15:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:15:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:15:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:15:59,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:59,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691745444] [2022-11-02 20:15:59,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691745444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:15:59,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818949566] [2022-11-02 20:15:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:59,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:15:59,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:59,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:15:59,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:15:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:15:59,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:15:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:15:59,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:15:59,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818949566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:59,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:15:59,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-02 20:15:59,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779020390] [2022-11-02 20:15:59,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:59,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:15:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:15:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:59,678 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:15:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:59,689 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-02 20:15:59,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:15:59,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-02 20:15:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:59,691 INFO L225 Difference]: With dead ends: 39 [2022-11-02 20:15:59,691 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 20:15:59,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:15:59,693 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:59,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:15:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 20:15:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-02 20:15:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-11-02 20:15:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-02 20:15:59,699 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2022-11-02 20:15:59,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:59,700 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-02 20:15:59,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:15:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-02 20:15:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:15:59,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:59,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:59,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:15:59,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-02 20:15:59,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash 165229081, now seen corresponding path program 1 times [2022-11-02 20:15:59,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:59,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975447748] [2022-11-02 20:15:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:59,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 20:15:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 20:16:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:16:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:16:00,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:00,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975447748] [2022-11-02 20:16:00,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975447748] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:00,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230373714] [2022-11-02 20:16:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:00,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:00,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:00,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:00,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:16:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:16:00,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:16:00,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:16:00,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230373714] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:00,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:00,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-02 20:16:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101114286] [2022-11-02 20:16:00,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:00,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:16:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:16:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:16:00,258 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:16:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:00,302 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-11-02 20:16:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:16:00,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2022-11-02 20:16:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:00,307 INFO L225 Difference]: With dead ends: 54 [2022-11-02 20:16:00,307 INFO L226 Difference]: Without dead ends: 34 [2022-11-02 20:16:00,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:16:00,309 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:00,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:16:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-02 20:16:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-02 20:16:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-11-02 20:16:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-02 20:16:00,315 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2022-11-02 20:16:00,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:00,315 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-02 20:16:00,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:16:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-02 20:16:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:16:00,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:00,317 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:00,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:00,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:00,518 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:00,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1299679203, now seen corresponding path program 2 times [2022-11-02 20:16:00,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:00,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944934624] [2022-11-02 20:16:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:00,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:16:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:16:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:16:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-02 20:16:00,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:00,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944934624] [2022-11-02 20:16:00,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944934624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:00,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177400780] [2022-11-02 20:16:00,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:16:00,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:00,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:00,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:00,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:16:00,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:16:00,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:00,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:16:00,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-02 20:16:00,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-02 20:16:00,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177400780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:00,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:00,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-02 20:16:00,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036636100] [2022-11-02 20:16:00,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:00,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:16:00,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:16:00,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:16:00,962 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:16:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:01,032 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-11-02 20:16:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:16:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-11-02 20:16:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:01,034 INFO L225 Difference]: With dead ends: 70 [2022-11-02 20:16:01,034 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 20:16:01,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:16:01,035 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:01,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:16:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 20:16:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-02 20:16:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 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) [2022-11-02 20:16:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-11-02 20:16:01,043 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 50 [2022-11-02 20:16:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:01,044 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-11-02 20:16:01,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:16:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-11-02 20:16:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:16:01,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:01,046 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:01,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:01,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:01,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:01,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash 936210247, now seen corresponding path program 3 times [2022-11-02 20:16:01,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:01,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909520138] [2022-11-02 20:16:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:16:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 20:16:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:01,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:16:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 20:16:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:01,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909520138] [2022-11-02 20:16:01,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909520138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:01,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865883875] [2022-11-02 20:16:01,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:16:01,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:01,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:01,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:16:01,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:16:01,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:01,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:16:01,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 20:16:01,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-02 20:16:01,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865883875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:01,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:01,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-02 20:16:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166188181] [2022-11-02 20:16:01,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:16:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:16:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:16:01,677 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:01,709 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2022-11-02 20:16:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:16:01,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-11-02 20:16:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:01,711 INFO L225 Difference]: With dead ends: 78 [2022-11-02 20:16:01,711 INFO L226 Difference]: Without dead ends: 55 [2022-11-02 20:16:01,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:16:01,713 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:01,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:16:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-02 20:16:01,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-02 20:16:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 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) [2022-11-02 20:16:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-11-02 20:16:01,722 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 64 [2022-11-02 20:16:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:01,723 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-11-02 20:16:01,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-11-02 20:16:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:16:01,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:01,727 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:01,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:01,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:16:01,952 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:01,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:01,953 INFO L85 PathProgramCache]: Analyzing trace with hash 571451455, now seen corresponding path program 4 times [2022-11-02 20:16:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:01,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696451898] [2022-11-02 20:16:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:01,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 20:16:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:16:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:16:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 20:16:02,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:02,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696451898] [2022-11-02 20:16:02,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696451898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:02,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176260678] [2022-11-02 20:16:02,417 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:16:02,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:02,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:02,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:02,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:16:02,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:16:02,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:02,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:16:02,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 20:16:02,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 20:16:02,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176260678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:02,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:02,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-02 20:16:02,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359486888] [2022-11-02 20:16:02,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:02,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 20:16:02,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 20:16:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:16:02,901 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:16:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:03,003 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2022-11-02 20:16:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:16:03,005 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 88 [2022-11-02 20:16:03,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:03,009 INFO L225 Difference]: With dead ends: 111 [2022-11-02 20:16:03,009 INFO L226 Difference]: Without dead ends: 79 [2022-11-02 20:16:03,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:16:03,015 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:03,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 112 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:16:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-02 20:16:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-02 20:16:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 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) [2022-11-02 20:16:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-11-02 20:16:03,034 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 88 [2022-11-02 20:16:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:03,036 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-11-02 20:16:03,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:16:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-11-02 20:16:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:16:03,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:03,040 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:03,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:03,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:03,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1629281449, now seen corresponding path program 5 times [2022-11-02 20:16:03,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:03,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806927551] [2022-11-02 20:16:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:03,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:04,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:16:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:04,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:16:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:04,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:16:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 20:16:04,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:04,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806927551] [2022-11-02 20:16:04,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806927551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:04,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518395267] [2022-11-02 20:16:04,342 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:16:04,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:04,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:04,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:04,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:16:05,548 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-11-02 20:16:05,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:05,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:16:05,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-11-02 20:16:05,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-02 20:16:05,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518395267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:05,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:05,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2022-11-02 20:16:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270411984] [2022-11-02 20:16:05,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-02 20:16:05,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-02 20:16:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 20:16:05,924 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:06,083 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2022-11-02 20:16:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 20:16:06,086 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 112 [2022-11-02 20:16:06,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:06,087 INFO L225 Difference]: With dead ends: 130 [2022-11-02 20:16:06,087 INFO L226 Difference]: Without dead ends: 98 [2022-11-02 20:16:06,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 20:16:06,089 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:06,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 202 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:16:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-02 20:16:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2022-11-02 20:16:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 92 states have internal predecessors, (95), 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) [2022-11-02 20:16:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-11-02 20:16:06,099 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 112 [2022-11-02 20:16:06,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:06,099 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-11-02 20:16:06,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.5641025641025643) internal successors, (100), 39 states have internal predecessors, (100), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-11-02 20:16:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-02 20:16:06,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:06,102 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 23, 23, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:06,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:06,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:06,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1848671305, now seen corresponding path program 6 times [2022-11-02 20:16:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:06,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049872187] [2022-11-02 20:16:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:16:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:07,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:16:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:07,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 20:16:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2022-11-02 20:16:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049872187] [2022-11-02 20:16:07,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049872187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497641394] [2022-11-02 20:16:07,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:16:07,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:07,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:07,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:07,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:16:07,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-02 20:16:07,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:07,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:16:07,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2022-11-02 20:16:07,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2022-11-02 20:16:08,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497641394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:08,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:08,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5, 5] total 32 [2022-11-02 20:16:08,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514857672] [2022-11-02 20:16:08,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:08,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:16:08,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:16:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:16:08,015 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:08,134 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2022-11-02 20:16:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:16:08,134 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 162 [2022-11-02 20:16:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:08,136 INFO L225 Difference]: With dead ends: 156 [2022-11-02 20:16:08,136 INFO L226 Difference]: Without dead ends: 108 [2022-11-02 20:16:08,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:16:08,141 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 178 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:16:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-02 20:16:08,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2022-11-02 20:16:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 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) [2022-11-02 20:16:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-11-02 20:16:08,168 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 162 [2022-11-02 20:16:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:08,169 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-11-02 20:16:08,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-11-02 20:16:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-02 20:16:08,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:08,174 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 24, 24, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:08,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:16:08,374 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash -627674557, now seen corresponding path program 7 times [2022-11-02 20:16:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:08,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257902685] [2022-11-02 20:16:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 20:16:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-02 20:16:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-02 20:16:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 20:16:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:09,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257902685] [2022-11-02 20:16:09,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257902685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:09,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708545202] [2022-11-02 20:16:09,787 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:16:09,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:09,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:09,793 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:09,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:16:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:10,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:16:10,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 20:16:10,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 20:16:11,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708545202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:11,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:11,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2022-11-02 20:16:11,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80616354] [2022-11-02 20:16:11,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:11,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:16:11,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:11,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:16:11,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:16:11,137 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:16:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:11,320 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2022-11-02 20:16:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-02 20:16:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 172 [2022-11-02 20:16:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:11,323 INFO L225 Difference]: With dead ends: 215 [2022-11-02 20:16:11,323 INFO L226 Difference]: Without dead ends: 159 [2022-11-02 20:16:11,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:16:11,326 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:11,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 112 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:16:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-02 20:16:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-11-02 20:16:11,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.0194805194805194) internal successors, (157), 154 states have internal predecessors, (157), 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) [2022-11-02 20:16:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2022-11-02 20:16:11,354 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 172 [2022-11-02 20:16:11,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:11,355 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2022-11-02 20:16:11,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:16:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2022-11-02 20:16:11,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-02 20:16:11,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:11,358 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 42, 42, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:11,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:11,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:16:11,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:11,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1171263479, now seen corresponding path program 8 times [2022-11-02 20:16:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:11,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474736315] [2022-11-02 20:16:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:11,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:16:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-02 20:16:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-11-02 20:16:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 20:16:15,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:15,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474736315] [2022-11-02 20:16:15,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474736315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:15,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157106559] [2022-11-02 20:16:15,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:16:15,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:15,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:15,038 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:15,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:16:15,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:16:15,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:15,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 20:16:15,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 20:16:15,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 20:16:19,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157106559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:19,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:19,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 105 [2022-11-02 20:16:19,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016980467] [2022-11-02 20:16:19,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:19,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-11-02 20:16:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:19,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-11-02 20:16:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2022-11-02 20:16:19,445 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand has 105 states, 105 states have (on average 2.1809523809523808) internal successors, (229), 105 states have internal predecessors, (229), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:16:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:19,895 INFO L93 Difference]: Finished difference Result 319 states and 378 transitions. [2022-11-02 20:16:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-02 20:16:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.1809523809523808) internal successors, (229), 105 states have internal predecessors, (229), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 224 [2022-11-02 20:16:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:19,897 INFO L225 Difference]: With dead ends: 319 [2022-11-02 20:16:19,897 INFO L226 Difference]: Without dead ends: 263 [2022-11-02 20:16:19,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2022-11-02 20:16:19,902 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 153 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:19,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 178 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:16:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-02 20:16:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-11-02 20:16:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 258 states have (on average 1.0116279069767442) internal successors, (261), 258 states have internal predecessors, (261), 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) [2022-11-02 20:16:19,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 267 transitions. [2022-11-02 20:16:19,914 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 267 transitions. Word has length 224 [2022-11-02 20:16:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:19,915 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 267 transitions. [2022-11-02 20:16:19,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.1809523809523808) internal successors, (229), 105 states have internal predecessors, (229), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-02 20:16:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 267 transitions. [2022-11-02 20:16:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-11-02 20:16:19,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:19,920 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 42, 42, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:19,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:20,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:20,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:20,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1664693599, now seen corresponding path program 9 times [2022-11-02 20:16:20,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:20,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238705626] [2022-11-02 20:16:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:20,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-11-02 20:16:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:29,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-11-02 20:16:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-11-02 20:16:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12303 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 1899 trivial. 0 not checked. [2022-11-02 20:16:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:29,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238705626] [2022-11-02 20:16:29,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238705626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157046646] [2022-11-02 20:16:29,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:16:29,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:29,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:29,609 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:29,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:16:30,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-02 20:16:30,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:30,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:16:30,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12303 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 11417 trivial. 0 not checked. [2022-11-02 20:16:30,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12303 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12267 trivial. 0 not checked. [2022-11-02 20:16:31,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157046646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:31,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:31,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 9, 9] total 119 [2022-11-02 20:16:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434578765] [2022-11-02 20:16:31,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:31,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-02 20:16:31,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-02 20:16:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5579, Invalid=8463, Unknown=0, NotChecked=0, Total=14042 [2022-11-02 20:16:31,048 INFO L87 Difference]: Start difference. First operand 263 states and 267 transitions. Second operand has 119 states, 119 states have (on average 2.19327731092437) internal successors, (261), 119 states have internal predecessors, (261), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:31,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:31,562 INFO L93 Difference]: Finished difference Result 338 states and 354 transitions. [2022-11-02 20:16:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-02 20:16:31,563 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.19327731092437) internal successors, (261), 119 states have internal predecessors, (261), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 328 [2022-11-02 20:16:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:31,565 INFO L225 Difference]: With dead ends: 338 [2022-11-02 20:16:31,566 INFO L226 Difference]: Without dead ends: 282 [2022-11-02 20:16:31,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5579, Invalid=8463, Unknown=0, NotChecked=0, Total=14042 [2022-11-02 20:16:31,573 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 117 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:31,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 279 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:16:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-02 20:16:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2022-11-02 20:16:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.0108695652173914) internal successors, (279), 276 states have internal predecessors, (279), 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) [2022-11-02 20:16:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 285 transitions. [2022-11-02 20:16:31,586 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 285 transitions. Word has length 328 [2022-11-02 20:16:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:31,586 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 285 transitions. [2022-11-02 20:16:31,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.19327731092437) internal successors, (261), 119 states have internal predecessors, (261), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 285 transitions. [2022-11-02 20:16:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-02 20:16:31,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:31,593 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 42, 42, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:31,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:31,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:16:31,812 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:31,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:31,813 INFO L85 PathProgramCache]: Analyzing trace with hash -117033647, now seen corresponding path program 10 times [2022-11-02 20:16:31,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:31,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751895378] [2022-11-02 20:16:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:31,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:40,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-11-02 20:16:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-02 20:16:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-11-02 20:16:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12668 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2022-11-02 20:16:40,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:40,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751895378] [2022-11-02 20:16:40,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751895378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:40,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936161651] [2022-11-02 20:16:40,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:16:40,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:40,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:40,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:40,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:16:40,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:16:40,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:40,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:16:40,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12668 backedges. 1271 proven. 196 refuted. 0 times theorem prover too weak. 11201 trivial. 0 not checked. [2022-11-02 20:16:41,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12668 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 11624 trivial. 0 not checked. [2022-11-02 20:16:42,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936161651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:42,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:16:42,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 17, 17] total 136 [2022-11-02 20:16:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818301564] [2022-11-02 20:16:42,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:42,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2022-11-02 20:16:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2022-11-02 20:16:42,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6060, Invalid=12300, Unknown=0, NotChecked=0, Total=18360 [2022-11-02 20:16:42,464 INFO L87 Difference]: Start difference. First operand 281 states and 285 transitions. Second operand has 136 states, 136 states have (on average 2.1691176470588234) internal successors, (295), 136 states have internal predecessors, (295), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:43,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:16:43,096 INFO L93 Difference]: Finished difference Result 388 states and 415 transitions. [2022-11-02 20:16:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-02 20:16:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 2.1691176470588234) internal successors, (295), 136 states have internal predecessors, (295), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 346 [2022-11-02 20:16:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:16:43,099 INFO L225 Difference]: With dead ends: 388 [2022-11-02 20:16:43,099 INFO L226 Difference]: Without dead ends: 316 [2022-11-02 20:16:43,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3090 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=6060, Invalid=12300, Unknown=0, NotChecked=0, Total=18360 [2022-11-02 20:16:43,103 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 134 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:16:43,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 242 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:16:43,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-02 20:16:43,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-11-02 20:16:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 310 states have (on average 1.0096774193548388) internal successors, (313), 310 states have internal predecessors, (313), 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) [2022-11-02 20:16:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 319 transitions. [2022-11-02 20:16:43,118 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 319 transitions. Word has length 346 [2022-11-02 20:16:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:16:43,119 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 319 transitions. [2022-11-02 20:16:43,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 2.1691176470588234) internal successors, (295), 136 states have internal predecessors, (295), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:16:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 319 transitions. [2022-11-02 20:16:43,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-02 20:16:43,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:16:43,130 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 90, 90, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:43,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:43,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:16:43,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:16:43,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash -29376077, now seen corresponding path program 11 times [2022-11-02 20:16:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:43,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107324252] [2022-11-02 20:16:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:51,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-11-02 20:16:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-02 20:16:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-11-02 20:16:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 19307 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 8491 trivial. 0 not checked. [2022-11-02 20:16:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:52,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107324252] [2022-11-02 20:16:52,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107324252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:16:52,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912691772] [2022-11-02 20:16:52,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:16:52,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:52,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:52,093 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:52,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bb5d99e-de6a-4f5d-8484-574cd0420f33/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process