./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU --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 bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:20:57,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:20:57,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:20:57,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:20:57,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:20:57,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:20:57,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:20:57,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:20:57,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:20:57,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:20:57,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:20:57,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:20:57,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:20:57,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:20:57,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:20:57,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:20:57,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:20:57,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:20:57,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:20:57,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:20:57,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:20:57,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:20:57,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:20:57,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:20:57,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:20:57,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:20:57,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:20:57,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:20:57,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:20:57,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:20:57,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:20:57,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:20:57,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:20:57,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:20:57,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:20:57,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:20:57,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:20:57,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:20:57,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:20:57,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:20:57,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:20:57,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:20:57,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:20:57,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:20:57,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:20:57,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:20:57,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:20:57,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:20:57,783 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:20:57,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:20:57,783 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:20:57,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:20:57,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:20:57,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:20:57,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:20:57,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:20:57,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:20:57,784 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:20:57,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:20:57,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:20:57,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:20:57,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:20:57,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:20:57,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:20:57,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:20:57,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:20:57,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:20:57,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:20:57,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:20:57,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:20:57,787 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:20:57,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:20:57,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:20:57,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:20:57,788 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_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2021-11-02 23:20:58,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:20:58,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:20:58,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:20:58,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:20:58,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:20:58,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2021-11-02 23:20:58,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/data/59e0f950a/f666a4574c854e138682f6cf9aef2f34/FLAG5c0a21693 [2021-11-02 23:20:58,803 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:20:58,804 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2021-11-02 23:20:58,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/data/59e0f950a/f666a4574c854e138682f6cf9aef2f34/FLAG5c0a21693 [2021-11-02 23:20:59,040 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/data/59e0f950a/f666a4574c854e138682f6cf9aef2f34 [2021-11-02 23:20:59,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:20:59,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:20:59,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:20:59,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:20:59,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:20:59,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:20:59" (1/1) ... [2021-11-02 23:20:59,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494d17b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:59, skipping insertion in model container [2021-11-02 23:20:59,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:20:59" (1/1) ... [2021-11-02 23:20:59,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:20:59,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:20:59,690 WARN L228 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_27363da0-efc0-4914-92ae-691d8f5126fb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2021-11-02 23:20:59,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:20:59,844 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:20:59,904 WARN L228 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_27363da0-efc0-4914-92ae-691d8f5126fb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2021-11-02 23:21:00,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:21:00,064 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:21:00,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00 WrapperNode [2021-11-02 23:21:00,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:21:00,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:21:00,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:21:00,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:21:00,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:21:00,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:21:00,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:21:00,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:21:00,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:21:00,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:21:00,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:21:00,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:21:00,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (1/1) ... [2021-11-02 23:21:00,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:21:00,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:00,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:21:00,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:21:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:21:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:21:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:21:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:21:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:21:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:21:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:21:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:21:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:21:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:21:01,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:21:01,631 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-02 23:21:01,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:01 BoogieIcfgContainer [2021-11-02 23:21:01,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:21:01,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:21:01,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:21:01,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:21:01,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:20:59" (1/3) ... [2021-11-02 23:21:01,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373eb749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:21:01, skipping insertion in model container [2021-11-02 23:21:01,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:00" (2/3) ... [2021-11-02 23:21:01,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373eb749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:21:01, skipping insertion in model container [2021-11-02 23:21:01,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:01" (3/3) ... [2021-11-02 23:21:01,642 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-2.i [2021-11-02 23:21:01,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:21:01,648 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 23:21:01,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:21:01,705 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 [2021-11-02 23:21:01,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 23:21:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 156 states have (on average 1.7307692307692308) internal successors, (270), 166 states have internal predecessors, (270), 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) [2021-11-02 23:21:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 23:21:01,743 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:01,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:01,744 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1407226647, now seen corresponding path program 1 times [2021-11-02 23:21:01,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:01,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340784173] [2021-11-02 23:21:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:01,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:01,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:01,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340784173] [2021-11-02 23:21:01,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340784173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:21:01,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:21:01,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:21:01,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839168378] [2021-11-02 23:21:01,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 23:21:01,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:01,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 23:21:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 23:21:01,974 INFO L87 Difference]: Start difference. First operand has 167 states, 156 states have (on average 1.7307692307692308) internal successors, (270), 166 states have internal predecessors, (270), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-02 23:21:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:02,009 INFO L93 Difference]: Finished difference Result 332 states and 538 transitions. [2021-11-02 23:21:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 23:21:02,011 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-02 23:21:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:02,021 INFO L225 Difference]: With dead ends: 332 [2021-11-02 23:21:02,022 INFO L226 Difference]: Without dead ends: 134 [2021-11-02 23:21:02,025 INFO L786 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 [2021-11-02 23:21:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-02 23:21:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-02 23:21:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 133 states have internal predecessors, (172), 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) [2021-11-02 23:21:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2021-11-02 23:21:02,067 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 8 [2021-11-02 23:21:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:02,067 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2021-11-02 23:21:02,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-11-02 23:21:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2021-11-02 23:21:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 23:21:02,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:02,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:02,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:21:02,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:02,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash 569968710, now seen corresponding path program 1 times [2021-11-02 23:21:02,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:02,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850418092] [2021-11-02 23:21:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:02,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:02,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:02,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850418092] [2021-11-02 23:21:02,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850418092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:21:02,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:21:02,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:21:02,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99330653] [2021-11-02 23:21:02,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:21:02,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:21:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:21:02,154 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-02 23:21:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:02,206 INFO L93 Difference]: Finished difference Result 266 states and 342 transitions. [2021-11-02 23:21:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:21:02,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-11-02 23:21:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:02,210 INFO L225 Difference]: With dead ends: 266 [2021-11-02 23:21:02,211 INFO L226 Difference]: Without dead ends: 221 [2021-11-02 23:21:02,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:21:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-02 23:21:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 135. [2021-11-02 23:21:02,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 125 states have (on average 1.384) internal successors, (173), 134 states have internal predecessors, (173), 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) [2021-11-02 23:21:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 173 transitions. [2021-11-02 23:21:02,229 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 173 transitions. Word has length 8 [2021-11-02 23:21:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:02,229 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 173 transitions. [2021-11-02 23:21:02,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-02 23:21:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 173 transitions. [2021-11-02 23:21:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 23:21:02,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:02,232 INFO L513 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] [2021-11-02 23:21:02,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:21:02,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:02,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:02,234 INFO L85 PathProgramCache]: Analyzing trace with hash -781067853, now seen corresponding path program 1 times [2021-11-02 23:21:02,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:02,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148785467] [2021-11-02 23:21:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:02,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:02,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:02,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161586802] [2021-11-02 23:21:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:02,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:02,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:02,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:02,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 23:21:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:02,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:21:02,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:02,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:02,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148785467] [2021-11-02 23:21:02,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:02,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161586802] [2021-11-02 23:21:02,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161586802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:21:02,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:21:02,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:21:02,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214506580] [2021-11-02 23:21:02,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:21:02,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:02,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:21:02,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:21:02,771 INFO L87 Difference]: Start difference. First operand 135 states and 173 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-02 23:21:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:02,891 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-02 23:21:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:21:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-02 23:21:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:02,898 INFO L225 Difference]: With dead ends: 288 [2021-11-02 23:21:02,898 INFO L226 Difference]: Without dead ends: 156 [2021-11-02 23:21:02,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:21:02,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-02 23:21:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2021-11-02 23:21:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 154 states have internal predecessors, (193), 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) [2021-11-02 23:21:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 193 transitions. [2021-11-02 23:21:02,935 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 193 transitions. Word has length 59 [2021-11-02 23:21:02,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:02,935 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 193 transitions. [2021-11-02 23:21:02,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-02 23:21:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 193 transitions. [2021-11-02 23:21:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 23:21:02,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:02,938 INFO L513 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] [2021-11-02 23:21:02,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 23:21:03,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:03,140 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1269877969, now seen corresponding path program 1 times [2021-11-02 23:21:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:03,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260101521] [2021-11-02 23:21:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:03,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:03,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:03,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587655481] [2021-11-02 23:21:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:03,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:03,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:03,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 23:21:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:03,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:21:03,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:03,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:03,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260101521] [2021-11-02 23:21:03,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:03,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587655481] [2021-11-02 23:21:03,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587655481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:21:03,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:21:03,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:21:03,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103757304] [2021-11-02 23:21:03,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:21:03,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:03,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:21:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:21:03,479 INFO L87 Difference]: Start difference. First operand 155 states and 193 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-02 23:21:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:03,567 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2021-11-02 23:21:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:21:03,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-02 23:21:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:03,569 INFO L225 Difference]: With dead ends: 299 [2021-11-02 23:21:03,569 INFO L226 Difference]: Without dead ends: 147 [2021-11-02 23:21:03,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:21:03,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-02 23:21:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2021-11-02 23:21:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 140 states have internal predecessors, (172), 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) [2021-11-02 23:21:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-11-02 23:21:03,595 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 59 [2021-11-02 23:21:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:03,596 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-11-02 23:21:03,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-02 23:21:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-11-02 23:21:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 23:21:03,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:03,605 INFO L513 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] [2021-11-02 23:21:03,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:03,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:03,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1890386365, now seen corresponding path program 1 times [2021-11-02 23:21:03,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:03,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306967606] [2021-11-02 23:21:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:03,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:03,854 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:03,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741865498] [2021-11-02 23:21:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:03,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:03,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:03,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:03,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 23:21:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:04,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:21:04,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:21:04,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:04,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306967606] [2021-11-02 23:21:04,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:04,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741865498] [2021-11-02 23:21:04,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741865498] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:04,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:21:04,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-02 23:21:04,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162212314] [2021-11-02 23:21:04,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:21:04,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:21:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:21:04,264 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-02 23:21:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:04,294 INFO L93 Difference]: Finished difference Result 371 states and 453 transitions. [2021-11-02 23:21:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:21:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-02 23:21:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:04,298 INFO L225 Difference]: With dead ends: 371 [2021-11-02 23:21:04,298 INFO L226 Difference]: Without dead ends: 326 [2021-11-02 23:21:04,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:21:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-02 23:21:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 234. [2021-11-02 23:21:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 224 states have (on average 1.2723214285714286) internal successors, (285), 233 states have internal predecessors, (285), 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) [2021-11-02 23:21:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 285 transitions. [2021-11-02 23:21:04,312 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 285 transitions. Word has length 59 [2021-11-02 23:21:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:04,313 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 285 transitions. [2021-11-02 23:21:04,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-02 23:21:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 285 transitions. [2021-11-02 23:21:04,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 23:21:04,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:04,324 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:04,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:04,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:04,525 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:04,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1357916902, now seen corresponding path program 2 times [2021-11-02 23:21:04,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:04,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585868101] [2021-11-02 23:21:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:04,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:04,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:04,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918948681] [2021-11-02 23:21:04,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:21:04,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:04,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:04,550 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:04,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 23:21:04,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 23:21:04,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:04,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 23:21:04,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-02 23:21:05,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:05,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585868101] [2021-11-02 23:21:05,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:05,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918948681] [2021-11-02 23:21:05,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918948681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:21:05,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:21:05,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:21:05,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578291596] [2021-11-02 23:21:05,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:21:05,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:21:05,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:21:05,576 INFO L87 Difference]: Start difference. First operand 234 states and 285 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-02 23:21:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:05,763 INFO L93 Difference]: Finished difference Result 410 states and 504 transitions. [2021-11-02 23:21:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:21:05,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 110 [2021-11-02 23:21:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:05,765 INFO L225 Difference]: With dead ends: 410 [2021-11-02 23:21:05,766 INFO L226 Difference]: Without dead ends: 232 [2021-11-02 23:21:05,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:21:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-02 23:21:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-02 23:21:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 222 states have (on average 1.2702702702702702) internal successors, (282), 231 states have internal predecessors, (282), 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) [2021-11-02 23:21:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 282 transitions. [2021-11-02 23:21:05,776 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 282 transitions. Word has length 110 [2021-11-02 23:21:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:05,776 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 282 transitions. [2021-11-02 23:21:05,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-02 23:21:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 282 transitions. [2021-11-02 23:21:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-02 23:21:05,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:05,779 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:05,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:05,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-02 23:21:06,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:06,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1177328342, now seen corresponding path program 1 times [2021-11-02 23:21:06,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:06,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813911923] [2021-11-02 23:21:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:06,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:06,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:06,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886621950] [2021-11-02 23:21:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:06,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:06,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:06,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:06,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 23:21:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:06,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:21:06,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 23:21:06,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:06,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813911923] [2021-11-02 23:21:06,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:06,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886621950] [2021-11-02 23:21:06,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886621950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:21:06,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:21:06,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:21:06,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916431751] [2021-11-02 23:21:06,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:21:06,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:21:06,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:21:06,646 INFO L87 Difference]: Start difference. First operand 232 states and 282 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-02 23:21:06,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:06,670 INFO L93 Difference]: Finished difference Result 418 states and 516 transitions. [2021-11-02 23:21:06,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:21:06,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 117 [2021-11-02 23:21:06,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:06,673 INFO L225 Difference]: With dead ends: 418 [2021-11-02 23:21:06,673 INFO L226 Difference]: Without dead ends: 236 [2021-11-02 23:21:06,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:21:06,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-02 23:21:06,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-11-02 23:21:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 226 states have (on average 1.2654867256637168) internal successors, (286), 235 states have internal predecessors, (286), 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) [2021-11-02 23:21:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 286 transitions. [2021-11-02 23:21:06,684 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 286 transitions. Word has length 117 [2021-11-02 23:21:06,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:06,686 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 286 transitions. [2021-11-02 23:21:06,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-02 23:21:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 286 transitions. [2021-11-02 23:21:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 23:21:06,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:06,690 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:06,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:06,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 23:21:06,912 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash 375393205, now seen corresponding path program 1 times [2021-11-02 23:21:06,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:06,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683931896] [2021-11-02 23:21:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:06,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:06,945 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:06,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520297242] [2021-11-02 23:21:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:06,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:06,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:06,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:06,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 23:21:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:21:07,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 23:21:07,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 23:21:07,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:07,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683931896] [2021-11-02 23:21:07,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:07,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520297242] [2021-11-02 23:21:07,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520297242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:07,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:21:07,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-02 23:21:07,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80917288] [2021-11-02 23:21:07,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:21:07,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:21:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:21:07,552 INFO L87 Difference]: Start difference. First operand 236 states and 286 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-02 23:21:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:07,586 INFO L93 Difference]: Finished difference Result 425 states and 523 transitions. [2021-11-02 23:21:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:21:07,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 119 [2021-11-02 23:21:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:07,588 INFO L225 Difference]: With dead ends: 425 [2021-11-02 23:21:07,588 INFO L226 Difference]: Without dead ends: 240 [2021-11-02 23:21:07,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:21:07,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-02 23:21:07,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-02 23:21:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 230 states have (on average 1.2608695652173914) internal successors, (290), 239 states have internal predecessors, (290), 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) [2021-11-02 23:21:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 290 transitions. [2021-11-02 23:21:07,598 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 290 transitions. Word has length 119 [2021-11-02 23:21:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:07,598 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 290 transitions. [2021-11-02 23:21:07,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-02 23:21:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 290 transitions. [2021-11-02 23:21:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 23:21:07,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:07,600 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:07,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:07,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:07,825 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:07,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1447349194, now seen corresponding path program 2 times [2021-11-02 23:21:07,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:07,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887078877] [2021-11-02 23:21:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:07,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:07,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:07,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300050756] [2021-11-02 23:21:07,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:21:07,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:07,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:07,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:07,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 23:21:08,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:21:08,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:08,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:21:08,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 23:21:08,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:08,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887078877] [2021-11-02 23:21:08,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:08,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300050756] [2021-11-02 23:21:08,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300050756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:08,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:21:08,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 23:21:08,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702261920] [2021-11-02 23:21:08,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:21:08,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:21:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:21:08,449 INFO L87 Difference]: Start difference. First operand 240 states and 290 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-02 23:21:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:08,483 INFO L93 Difference]: Finished difference Result 432 states and 530 transitions. [2021-11-02 23:21:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:21:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 121 [2021-11-02 23:21:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:08,486 INFO L225 Difference]: With dead ends: 432 [2021-11-02 23:21:08,487 INFO L226 Difference]: Without dead ends: 244 [2021-11-02 23:21:08,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:21:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-02 23:21:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-02 23:21:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 234 states have (on average 1.2564102564102564) internal successors, (294), 243 states have internal predecessors, (294), 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) [2021-11-02 23:21:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 294 transitions. [2021-11-02 23:21:08,497 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 294 transitions. Word has length 121 [2021-11-02 23:21:08,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:08,498 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 294 transitions. [2021-11-02 23:21:08,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-02 23:21:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 294 transitions. [2021-11-02 23:21:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 23:21:08,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:08,500 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:08,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:08,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:08,726 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash 414988629, now seen corresponding path program 3 times [2021-11-02 23:21:08,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:08,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400589064] [2021-11-02 23:21:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:08,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:08,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:08,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732265437] [2021-11-02 23:21:08,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:21:08,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:08,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:08,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:08,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 23:21:22,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-02 23:21:22,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:22,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 23:21:22,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 23:21:22,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:22,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400589064] [2021-11-02 23:21:22,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:22,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732265437] [2021-11-02 23:21:22,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732265437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:22,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:21:22,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-02 23:21:22,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74230013] [2021-11-02 23:21:22,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:21:22,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:22,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:21:22,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:21:22,906 INFO L87 Difference]: Start difference. First operand 244 states and 294 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2021-11-02 23:21:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:22,951 INFO L93 Difference]: Finished difference Result 486 states and 587 transitions. [2021-11-02 23:21:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:21:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 123 [2021-11-02 23:21:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:22,955 INFO L225 Difference]: With dead ends: 486 [2021-11-02 23:21:22,956 INFO L226 Difference]: Without dead ends: 441 [2021-11-02 23:21:22,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:21:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-02 23:21:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 343. [2021-11-02 23:21:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 333 states have (on average 1.2402402402402402) internal successors, (413), 342 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) [2021-11-02 23:21:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 413 transitions. [2021-11-02 23:21:22,971 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 413 transitions. Word has length 123 [2021-11-02 23:21:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:22,972 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 413 transitions. [2021-11-02 23:21:22,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2021-11-02 23:21:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 413 transitions. [2021-11-02 23:21:22,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-02 23:21:22,975 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:22,975 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:22,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:23,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 23:21:23,176 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1984379982, now seen corresponding path program 4 times [2021-11-02 23:21:23,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:23,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070207498] [2021-11-02 23:21:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:23,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:23,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:23,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222034842] [2021-11-02 23:21:23,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:21:23,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:23,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:23,206 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:23,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 23:21:23,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:21:23,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:23,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 23:21:23,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 23:21:24,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:24,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070207498] [2021-11-02 23:21:24,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:24,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222034842] [2021-11-02 23:21:24,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222034842] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:24,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:21:24,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 23:21:24,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632776400] [2021-11-02 23:21:24,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:21:24,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:21:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:21:24,087 INFO L87 Difference]: Start difference. First operand 343 states and 413 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2021-11-02 23:21:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:24,141 INFO L93 Difference]: Finished difference Result 585 states and 706 transitions. [2021-11-02 23:21:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:21:24,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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 174 [2021-11-02 23:21:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:24,145 INFO L225 Difference]: With dead ends: 585 [2021-11-02 23:21:24,145 INFO L226 Difference]: Without dead ends: 540 [2021-11-02 23:21:24,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:21:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-02 23:21:24,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 442. [2021-11-02 23:21:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 432 states have (on average 1.2314814814814814) internal successors, (532), 441 states have internal predecessors, (532), 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) [2021-11-02 23:21:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 532 transitions. [2021-11-02 23:21:24,167 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 532 transitions. Word has length 174 [2021-11-02 23:21:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:24,167 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 532 transitions. [2021-11-02 23:21:24,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2021-11-02 23:21:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 532 transitions. [2021-11-02 23:21:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-02 23:21:24,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:24,172 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:24,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:24,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:24,400 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:24,400 INFO L85 PathProgramCache]: Analyzing trace with hash 331292853, now seen corresponding path program 5 times [2021-11-02 23:21:24,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:24,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340226091] [2021-11-02 23:21:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:24,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:24,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:24,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908250842] [2021-11-02 23:21:24,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:21:24,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:24,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:24,461 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:24,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 23:21:24,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-02 23:21:24,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:21:24,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 23:21:24,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:21:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-02 23:21:25,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:21:25,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340226091] [2021-11-02 23:21:25,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:21:25,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908250842] [2021-11-02 23:21:25,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908250842] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:21:25,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 23:21:25,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-02 23:21:25,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971584521] [2021-11-02 23:21:25,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:21:25,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:21:25,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:21:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:21:25,407 INFO L87 Difference]: Start difference. First operand 442 states and 532 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-02 23:21:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:21:25,451 INFO L93 Difference]: Finished difference Result 839 states and 1021 transitions. [2021-11-02 23:21:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:21:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 225 [2021-11-02 23:21:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:21:25,454 INFO L225 Difference]: With dead ends: 839 [2021-11-02 23:21:25,455 INFO L226 Difference]: Without dead ends: 450 [2021-11-02 23:21:25,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:21:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-02 23:21:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-02 23:21:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 440 states have (on average 1.2272727272727273) internal successors, (540), 449 states have internal predecessors, (540), 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) [2021-11-02 23:21:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 540 transitions. [2021-11-02 23:21:25,476 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 540 transitions. Word has length 225 [2021-11-02 23:21:25,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:21:25,476 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 540 transitions. [2021-11-02 23:21:25,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-02 23:21:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 540 transitions. [2021-11-02 23:21:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 23:21:25,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:21:25,480 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:21:25,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 23:21:25,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 23:21:25,708 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:21:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:21:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1136770102, now seen corresponding path program 6 times [2021-11-02 23:21:25,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:21:25,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377869116] [2021-11-02 23:21:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:21:25,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:21:25,725 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:21:25,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338013424] [2021-11-02 23:21:25,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:21:25,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:21:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:25,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:21:25,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27363da0-efc0-4914-92ae-691d8f5126fb/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process