./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G --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 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:52:36,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:52:36,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:52:36,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:52:36,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:52:36,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:52:36,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:52:36,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:52:36,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:52:36,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:52:36,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:52:36,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:52:36,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:52:36,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:52:36,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:52:36,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:52:36,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:52:36,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:52:36,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:52:36,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:52:36,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:52:36,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:52:36,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:52:36,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:52:36,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:52:36,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:52:36,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:52:36,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:52:36,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:52:36,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:52:36,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:52:36,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:52:36,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:52:36,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:52:36,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:52:36,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:52:36,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:52:36,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:52:36,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:52:36,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:52:36,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:52:36,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:52:36,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:52:36,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:52:36,373 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:52:36,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:52:36,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:52:36,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:52:36,375 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:52:36,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:52:36,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:52:36,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:52:36,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:52:36,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:52:36,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:52:36,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:52:36,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:52:36,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:52:36,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:52:36,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:52:36,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:52:36,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:52:36,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:52:36,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:52:36,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:52:36,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:52:36,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:52:36,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:52:36,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:52:36,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:52:36,382 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:52:36,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:52:36,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:52:36,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:52:36,383 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_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 [2021-11-23 12:52:36,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:52:36,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:52:36,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:52:36,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:52:36,680 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:52:36,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2021-11-23 12:52:36,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/data/3777cd7db/917bd298c73c41498eae499ed028166b/FLAGa9a405dec [2021-11-23 12:52:37,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:52:37,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2021-11-23 12:52:37,507 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/data/3777cd7db/917bd298c73c41498eae499ed028166b/FLAGa9a405dec [2021-11-23 12:52:37,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/data/3777cd7db/917bd298c73c41498eae499ed028166b [2021-11-23 12:52:37,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:52:37,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:52:37,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:52:37,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:52:37,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:52:37,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:52:37" (1/1) ... [2021-11-23 12:52:37,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1761e8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:37, skipping insertion in model container [2021-11-23 12:52:37,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:52:37" (1/1) ... [2021-11-23 12:52:37,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:52:37,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:52:38,372 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_b60b5433-bea2-4f37-a9d8-e98d10bee08c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2021-11-23 12:52:38,568 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_b60b5433-bea2-4f37-a9d8-e98d10bee08c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2021-11-23 12:52:38,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:52:38,606 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:52:38,636 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_b60b5433-bea2-4f37-a9d8-e98d10bee08c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2021-11-23 12:52:38,709 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_b60b5433-bea2-4f37-a9d8-e98d10bee08c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2021-11-23 12:52:38,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:52:38,778 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:52:38,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38 WrapperNode [2021-11-23 12:52:38,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:52:38,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:52:38,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:52:38,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:52:38,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:38,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:38,928 INFO L137 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 22, calls inlined = 37, statements flattened = 1388 [2021-11-23 12:52:38,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:52:38,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:52:38,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:52:38,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:52:38,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:38,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:38,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:38,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:39,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:39,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:39,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:39,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:52:39,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:52:39,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:52:39,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:52:39,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (1/1) ... [2021-11-23 12:52:39,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:52:39,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:52:39,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:52:39,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:52:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:52:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:52:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:52:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:52:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:52:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:52:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 12:52:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:52:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:52:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:52:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:52:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:52:39,388 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:52:39,390 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:52:40,711 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:52:40,730 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:52:40,731 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-23 12:52:40,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:52:40 BoogieIcfgContainer [2021-11-23 12:52:40,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:52:40,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:52:40,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:52:40,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:52:40,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:52:37" (1/3) ... [2021-11-23 12:52:40,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4dccd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:52:40, skipping insertion in model container [2021-11-23 12:52:40,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:52:38" (2/3) ... [2021-11-23 12:52:40,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4dccd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:52:40, skipping insertion in model container [2021-11-23 12:52:40,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:52:40" (3/3) ... [2021-11-23 12:52:40,750 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-2.i [2021-11-23 12:52:40,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:52:40,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-23 12:52:40,827 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:52:40,851 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:52:40,853 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-23 12:52:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 361 states, 329 states have (on average 1.7112462006079028) internal successors, (563), 360 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:52:40,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:40,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:40,896 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:40,902 INFO L85 PathProgramCache]: Analyzing trace with hash 761565119, now seen corresponding path program 1 times [2021-11-23 12:52:40,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:40,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859007291] [2021-11-23 12:52:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:40,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:52:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:52:41,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:52:41,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859007291] [2021-11-23 12:52:41,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859007291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:52:41,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:52:41,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:52:41,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997547787] [2021-11-23 12:52:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:52:41,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:52:41,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:52:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:52:41,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:52:41,159 INFO L87 Difference]: Start difference. First operand has 361 states, 329 states have (on average 1.7112462006079028) internal successors, (563), 360 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:41,241 INFO L93 Difference]: Finished difference Result 720 states and 1124 transitions. [2021-11-23 12:52:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:52:41,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:52:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:41,256 INFO L225 Difference]: With dead ends: 720 [2021-11-23 12:52:41,256 INFO L226 Difference]: Without dead ends: 328 [2021-11-23 12:52:41,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:52:41,294 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:41,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:52:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-23 12:52:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-11-23 12:52:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 297 states have (on average 1.3905723905723906) internal successors, (413), 327 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 413 transitions. [2021-11-23 12:52:41,376 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 413 transitions. Word has length 9 [2021-11-23 12:52:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:41,377 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 413 transitions. [2021-11-23 12:52:41,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 413 transitions. [2021-11-23 12:52:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 12:52:41,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:41,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:41,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:52:41,381 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1322791971, now seen corresponding path program 1 times [2021-11-23 12:52:41,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:41,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203174749] [2021-11-23 12:52:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:41,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:52:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:52:41,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:52:41,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203174749] [2021-11-23 12:52:41,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203174749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:52:41,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:52:41,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:52:41,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157080710] [2021-11-23 12:52:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:52:41,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:52:41,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:52:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:52:41,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:52:41,471 INFO L87 Difference]: Start difference. First operand 328 states and 413 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:41,974 INFO L93 Difference]: Finished difference Result 679 states and 858 transitions. [2021-11-23 12:52:41,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:52:41,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-23 12:52:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:41,981 INFO L225 Difference]: With dead ends: 679 [2021-11-23 12:52:41,981 INFO L226 Difference]: Without dead ends: 519 [2021-11-23 12:52:41,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:52:41,983 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 234 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:41,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 1093 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:52:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-23 12:52:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 330. [2021-11-23 12:52:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 299 states have (on average 1.3879598662207357) internal successors, (415), 329 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 415 transitions. [2021-11-23 12:52:42,034 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 415 transitions. Word has length 44 [2021-11-23 12:52:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:42,034 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 415 transitions. [2021-11-23 12:52:42,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 415 transitions. [2021-11-23 12:52:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:52:42,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:42,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:42,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:52:42,038 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:42,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1543983351, now seen corresponding path program 1 times [2021-11-23 12:52:42,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:42,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784558374] [2021-11-23 12:52:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:42,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:42,062 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:52:42,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673083337] [2021-11-23 12:52:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:42,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:42,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:52:42,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:52:42,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:52:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:52:42,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:52:42,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:52:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:52:42,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:52:42,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:52:42,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784558374] [2021-11-23 12:52:42,400 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:52:42,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673083337] [2021-11-23 12:52:42,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673083337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:52:42,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:52:42,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:52:42,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649013473] [2021-11-23 12:52:42,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:52:42,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:52:42,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:52:42,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:52:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:52:42,403 INFO L87 Difference]: Start difference. First operand 330 states and 415 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:42,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:42,489 INFO L93 Difference]: Finished difference Result 677 states and 857 transitions. [2021-11-23 12:52:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:52:42,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 12:52:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:42,492 INFO L225 Difference]: With dead ends: 677 [2021-11-23 12:52:42,492 INFO L226 Difference]: Without dead ends: 351 [2021-11-23 12:52:42,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:52:42,494 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 9 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:42,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 771 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:52:42,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-23 12:52:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2021-11-23 12:52:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 319 states have (on average 1.3636363636363635) internal successors, (435), 349 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 435 transitions. [2021-11-23 12:52:42,508 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 435 transitions. Word has length 57 [2021-11-23 12:52:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:42,509 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 435 transitions. [2021-11-23 12:52:42,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 435 transitions. [2021-11-23 12:52:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:52:42,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:42,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:42,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:52:42,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:42,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:42,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1379176647, now seen corresponding path program 1 times [2021-11-23 12:52:42,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:42,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279782362] [2021-11-23 12:52:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:42,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:42,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:52:42,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339134502] [2021-11-23 12:52:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:42,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:42,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:52:42,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:52:42,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:52:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:52:42,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:52:42,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:52:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:52:43,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:52:43,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:52:43,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279782362] [2021-11-23 12:52:43,132 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:52:43,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339134502] [2021-11-23 12:52:43,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339134502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:52:43,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:52:43,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:52:43,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716450274] [2021-11-23 12:52:43,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:52:43,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:52:43,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:52:43,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:52:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:52:43,135 INFO L87 Difference]: Start difference. First operand 350 states and 435 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:43,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:43,228 INFO L93 Difference]: Finished difference Result 688 states and 858 transitions. [2021-11-23 12:52:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:52:43,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 12:52:43,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:43,231 INFO L225 Difference]: With dead ends: 688 [2021-11-23 12:52:43,231 INFO L226 Difference]: Without dead ends: 342 [2021-11-23 12:52:43,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:52:43,235 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 401 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:43,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 782 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:52:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-23 12:52:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2021-11-23 12:52:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 305 states have (on average 1.3573770491803279) internal successors, (414), 335 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 414 transitions. [2021-11-23 12:52:43,249 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 414 transitions. Word has length 57 [2021-11-23 12:52:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:43,250 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 414 transitions. [2021-11-23 12:52:43,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 414 transitions. [2021-11-23 12:52:43,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 12:52:43,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:43,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:43,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:52:43,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:43,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:43,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:43,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1996694677, now seen corresponding path program 1 times [2021-11-23 12:52:43,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:43,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364357731] [2021-11-23 12:52:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:43,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:43,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:52:43,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558647704] [2021-11-23 12:52:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:43,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:43,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:52:43,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:52:43,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:52:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:52:43,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:52:43,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:52:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:52:43,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:52:43,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:52:43,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364357731] [2021-11-23 12:52:43,963 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:52:43,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558647704] [2021-11-23 12:52:43,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558647704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:52:43,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:52:43,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:52:43,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562272713] [2021-11-23 12:52:43,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:52:43,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:52:43,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:52:43,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:52:43,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:52:43,966 INFO L87 Difference]: Start difference. First operand 336 states and 414 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:44,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:44,061 INFO L93 Difference]: Finished difference Result 854 states and 1052 transitions. [2021-11-23 12:52:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:52:44,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 12:52:44,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:44,065 INFO L225 Difference]: With dead ends: 854 [2021-11-23 12:52:44,065 INFO L226 Difference]: Without dead ends: 522 [2021-11-23 12:52:44,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:52:44,067 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 193 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:44,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 823 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:52:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-11-23 12:52:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 489. [2021-11-23 12:52:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 458 states have (on average 1.3602620087336244) internal successors, (623), 488 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 623 transitions. [2021-11-23 12:52:44,100 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 623 transitions. Word has length 57 [2021-11-23 12:52:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:44,100 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 623 transitions. [2021-11-23 12:52:44,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 623 transitions. [2021-11-23 12:52:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 12:52:44,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:44,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:44,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:52:44,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:44,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:44,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:44,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1378561412, now seen corresponding path program 1 times [2021-11-23 12:52:44,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:44,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080245012] [2021-11-23 12:52:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:44,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:44,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:52:44,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763926276] [2021-11-23 12:52:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:44,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:52:44,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:52:44,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:52:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:52:44,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:52:44,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:52:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:52:44,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:52:44,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:52:44,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080245012] [2021-11-23 12:52:44,847 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:52:44,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763926276] [2021-11-23 12:52:44,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763926276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:52:44,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:52:44,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:52:44,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793711574] [2021-11-23 12:52:44,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:52:44,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:52:44,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:52:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:52:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:52:44,850 INFO L87 Difference]: Start difference. First operand 489 states and 623 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:44,880 INFO L93 Difference]: Finished difference Result 931 states and 1195 transitions. [2021-11-23 12:52:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:52:44,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 12:52:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:44,884 INFO L225 Difference]: With dead ends: 931 [2021-11-23 12:52:44,884 INFO L226 Difference]: Without dead ends: 490 [2021-11-23 12:52:44,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:52:44,886 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 0 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:44,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 802 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:52:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-23 12:52:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-11-23 12:52:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 459 states have (on average 1.3594771241830066) internal successors, (624), 489 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:44,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 624 transitions. [2021-11-23 12:52:44,902 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 624 transitions. Word has length 64 [2021-11-23 12:52:44,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:44,902 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 624 transitions. [2021-11-23 12:52:44,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:44,903 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 624 transitions. [2021-11-23 12:52:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 12:52:44,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:44,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:44,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:52:45,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:45,129 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:45,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1359691312, now seen corresponding path program 1 times [2021-11-23 12:52:45,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:45,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431817099] [2021-11-23 12:52:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:45,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:45,147 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:52:45,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742728855] [2021-11-23 12:52:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:45,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:45,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:52:45,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:52:45,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 12:52:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:52:45,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:52:45,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:52:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:52:45,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:52:45,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:52:45,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431817099] [2021-11-23 12:52:45,920 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:52:45,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742728855] [2021-11-23 12:52:45,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742728855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:52:45,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:52:45,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:52:45,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921312737] [2021-11-23 12:52:45,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:52:45,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:52:45,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:52:45,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:52:45,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:52:45,923 INFO L87 Difference]: Start difference. First operand 490 states and 624 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:45,952 INFO L93 Difference]: Finished difference Result 933 states and 1197 transitions. [2021-11-23 12:52:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:52:45,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-23 12:52:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:45,956 INFO L225 Difference]: With dead ends: 933 [2021-11-23 12:52:45,956 INFO L226 Difference]: Without dead ends: 491 [2021-11-23 12:52:45,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:52:45,958 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 0 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:45,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 802 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:52:45,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-23 12:52:45,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2021-11-23 12:52:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 460 states have (on average 1.358695652173913) internal successors, (625), 490 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 625 transitions. [2021-11-23 12:52:45,974 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 625 transitions. Word has length 65 [2021-11-23 12:52:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:45,974 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 625 transitions. [2021-11-23 12:52:45,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 625 transitions. [2021-11-23 12:52:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 12:52:45,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:45,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:46,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:52:46,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:46,193 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:46,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1147149435, now seen corresponding path program 1 times [2021-11-23 12:52:46,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:46,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197192179] [2021-11-23 12:52:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:46,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:46,224 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:52:46,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124576092] [2021-11-23 12:52:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:46,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:52:46,226 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:52:46,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 12:52:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:52:46,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:52:46,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:52:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:52:46,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:52:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 12:52:46,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:52:46,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197192179] [2021-11-23 12:52:46,913 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 12:52:46,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124576092] [2021-11-23 12:52:46,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124576092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:52:46,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:52:46,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-23 12:52:46,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8500918] [2021-11-23 12:52:46,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:52:46,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:52:46,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:52:46,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:52:46,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:52:46,916 INFO L87 Difference]: Start difference. First operand 491 states and 625 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:47,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:52:47,006 INFO L93 Difference]: Finished difference Result 938 states and 1205 transitions. [2021-11-23 12:52:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:52:47,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-23 12:52:47,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:52:47,010 INFO L225 Difference]: With dead ends: 938 [2021-11-23 12:52:47,011 INFO L226 Difference]: Without dead ends: 495 [2021-11-23 12:52:47,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:52:47,012 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 0 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:52:47,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1595 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:52:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-23 12:52:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2021-11-23 12:52:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 464 states have (on average 1.355603448275862) internal successors, (629), 494 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 629 transitions. [2021-11-23 12:52:47,028 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 629 transitions. Word has length 66 [2021-11-23 12:52:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:52:47,029 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 629 transitions. [2021-11-23 12:52:47,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:52:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 629 transitions. [2021-11-23 12:52:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 12:52:47,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:52:47,030 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:52:47,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:52:47,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 12:52:47,253 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-23 12:52:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:52:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash -816430532, now seen corresponding path program 2 times [2021-11-23 12:52:47,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:52:47,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012004862] [2021-11-23 12:52:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:52:47,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:52:47,281 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 12:52:47,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441000677] [2021-11-23 12:52:47,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:52:47,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:52:47,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:52:47,286 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:52:47,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b60b5433-bea2-4f37-a9d8-e98d10bee08c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process