./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD --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 a27e222af80a0e7079fd1845c98cd202d89805160fe537f012a3762f02f5a114 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:44:22,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:44:22,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:44:22,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:44:22,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:44:22,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:44:22,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:44:22,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:44:22,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:44:22,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:44:22,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:44:22,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:44:22,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:44:22,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:44:22,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:44:22,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:44:22,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:44:22,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:44:22,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:44:22,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:44:22,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:44:22,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:44:22,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:44:22,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:44:22,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:44:22,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:44:22,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:44:22,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:44:22,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:44:22,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:44:22,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:44:22,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:44:22,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:44:22,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:44:22,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:44:22,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:44:22,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:44:22,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:44:22,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:44:22,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:44:22,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:44:22,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:44:22,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:44:22,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:44:22,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:44:22,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:44:22,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:44:22,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:44:22,203 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:44:22,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:44:22,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:44:22,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:44:22,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:44:22,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:44:22,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:44:22,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:44:22,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:44:22,205 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:44:22,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:44:22,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:44:22,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:44:22,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:44:22,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:44:22,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:44:22,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:44:22,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:44:22,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:44:22,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:44:22,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:44:22,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:44:22,208 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:44:22,208 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:44:22,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:44:22,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:44:22,209 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_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a27e222af80a0e7079fd1845c98cd202d89805160fe537f012a3762f02f5a114 [2021-10-28 23:44:22,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:44:22,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:44:22,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:44:22,571 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:44:22,572 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:44:22,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound5.c [2021-10-28 23:44:22,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/data/530434c53/f7423d972a344408be7538de942d656e/FLAG36881fbfd [2021-10-28 23:44:23,296 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:44:23,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound5.c [2021-10-28 23:44:23,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/data/530434c53/f7423d972a344408be7538de942d656e/FLAG36881fbfd [2021-10-28 23:44:23,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/data/530434c53/f7423d972a344408be7538de942d656e [2021-10-28 23:44:23,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:44:23,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:44:23,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:44:23,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:44:23,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:44:23,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:23,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34599473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23, skipping insertion in model container [2021-10-28 23:44:23,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:23,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:44:23,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:44:23,883 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_01f37935-59e9-4b81-86f1-b2dcdc622603/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound5.c[524,537] [2021-10-28 23:44:23,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:44:23,915 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:44:23,928 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_01f37935-59e9-4b81-86f1-b2dcdc622603/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound5.c[524,537] [2021-10-28 23:44:23,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:44:23,957 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:44:23,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23 WrapperNode [2021-10-28 23:44:23,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:44:23,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:44:23,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:44:23,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:44:23,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:23,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:44:24,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:44:24,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:44:24,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:44:24,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:44:24,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:44:24,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:44:24,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:44:24,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (1/1) ... [2021-10-28 23:44:24,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:44:24,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:24,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:44:24,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:44:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:44:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:44:24,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:44:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:44:24,472 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:44:24,472 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-28 23:44:24,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:24 BoogieIcfgContainer [2021-10-28 23:44:24,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:44:24,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:44:24,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:44:24,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:44:24,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:44:23" (1/3) ... [2021-10-28 23:44:24,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e27778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:44:24, skipping insertion in model container [2021-10-28 23:44:24,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:44:23" (2/3) ... [2021-10-28 23:44:24,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e27778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:44:24, skipping insertion in model container [2021-10-28 23:44:24,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:24" (3/3) ... [2021-10-28 23:44:24,484 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound5.c [2021-10-28 23:44:24,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:44:24,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 23:44:24,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:44:24,572 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 [2021-10-28 23:44:24,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:44:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 24 states have (on average 1.625) internal successors, (39), 27 states have internal predecessors, (39), 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) [2021-10-28 23:44:24,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:44:24,600 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:24,601 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:24,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:24,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:24,610 INFO L85 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-28 23:44:24,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:24,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519779107] [2021-10-28 23:44:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:24,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:24,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:24,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519779107] [2021-10-28 23:44:24,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519779107] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:24,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:24,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:44:24,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397514380] [2021-10-28 23:44:24,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:44:24,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:44:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:44:24,836 INFO L87 Difference]: Start difference. First operand has 28 states, 24 states have (on average 1.625) internal successors, (39), 27 states have internal predecessors, (39), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-28 23:44:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:24,856 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-10-28 23:44:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:44:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-10-28 23:44:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:24,870 INFO L225 Difference]: With dead ends: 53 [2021-10-28 23:44:24,870 INFO L226 Difference]: Without dead ends: 24 [2021-10-28 23:44:24,873 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 [2021-10-28 23:44:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-28 23:44:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-28 23:44:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 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) [2021-10-28 23:44:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-28 23:44:24,906 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2021-10-28 23:44:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:24,906 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-28 23:44:24,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-28 23:44:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-28 23:44:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:44:24,908 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:24,908 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:24,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:44:24,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-28 23:44:24,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:24,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233669768] [2021-10-28 23:44:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:24,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:24,937 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:24,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503453889] [2021-10-28 23:44:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:24,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:24,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:24,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:24,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:44:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:25,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:44:25,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:25,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:25,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233669768] [2021-10-28 23:44:25,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:25,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503453889] [2021-10-28 23:44:25,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503453889] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:25,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:25,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:44:25,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634732551] [2021-10-28 23:44:25,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:44:25,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:44:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:44:25,367 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 23:44:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:25,482 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-10-28 23:44:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:44:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-28 23:44:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:25,485 INFO L225 Difference]: With dead ends: 41 [2021-10-28 23:44:25,486 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 23:44:25,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:44:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 23:44:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2021-10-28 23:44:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 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) [2021-10-28 23:44:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-10-28 23:44:25,495 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2021-10-28 23:44:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:25,496 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-10-28 23:44:25,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 23:44:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-10-28 23:44:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:44:25,498 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:25,498 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:25,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:25,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:25,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:25,713 INFO L85 PathProgramCache]: Analyzing trace with hash -937517175, now seen corresponding path program 1 times [2021-10-28 23:44:25,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:25,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596103599] [2021-10-28 23:44:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:25,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:25,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:25,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627453014] [2021-10-28 23:44:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:25,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:25,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:25,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:25,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:44:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:25,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 23:44:25,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:26,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:26,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596103599] [2021-10-28 23:44:26,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:26,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627453014] [2021-10-28 23:44:26,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627453014] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:26,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:26,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 23:44:26,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187220885] [2021-10-28 23:44:26,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:44:26,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:44:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:44:26,874 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-28 23:44:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:31,644 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2021-10-28 23:44:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:44:31,645 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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 14 [2021-10-28 23:44:31,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:31,646 INFO L225 Difference]: With dead ends: 39 [2021-10-28 23:44:31,646 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 23:44:31,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:44:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 23:44:31,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-10-28 23:44:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-10-28 23:44:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-28 23:44:31,654 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 14 [2021-10-28 23:44:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:31,655 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-28 23:44:31,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-28 23:44:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-28 23:44:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 23:44:31,657 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:31,657 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:31,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:31,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:31,884 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1003041614, now seen corresponding path program 1 times [2021-10-28 23:44:31,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:31,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144312174] [2021-10-28 23:44:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:31,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:31,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:31,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596620817] [2021-10-28 23:44:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:31,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:31,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:31,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:31,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:44:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:32,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-28 23:44:32,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:33,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:33,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144312174] [2021-10-28 23:44:33,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:33,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596620817] [2021-10-28 23:44:33,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596620817] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:33,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:33,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 23:44:33,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078470001] [2021-10-28 23:44:33,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:44:33,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:33,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:44:33,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:44:33,435 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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) [2021-10-28 23:44:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:34,108 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-10-28 23:44:34,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:44:34,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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 15 [2021-10-28 23:44:34,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:34,109 INFO L225 Difference]: With dead ends: 53 [2021-10-28 23:44:34,110 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 23:44:34,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:44:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 23:44:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2021-10-28 23:44:34,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 31 states have internal predecessors, (37), 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) [2021-10-28 23:44:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-10-28 23:44:34,117 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 15 [2021-10-28 23:44:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:34,117 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-10-28 23:44:34,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 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) [2021-10-28 23:44:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-10-28 23:44:34,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:44:34,119 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:34,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:34,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:34,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:34,332 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash 989284300, now seen corresponding path program 1 times [2021-10-28 23:44:34,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:34,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414397196] [2021-10-28 23:44:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:34,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:34,349 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:34,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824677771] [2021-10-28 23:44:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:34,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:34,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:34,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:34,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:44:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:34,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:44:34,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:34,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:34,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414397196] [2021-10-28 23:44:34,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:34,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824677771] [2021-10-28 23:44:34,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824677771] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:34,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:34,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:44:34,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016027455] [2021-10-28 23:44:34,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:44:34,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:44:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:34,624 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2021-10-28 23:44:34,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:34,802 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2021-10-28 23:44:34,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:44:34,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 16 [2021-10-28 23:44:34,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:34,804 INFO L225 Difference]: With dead ends: 48 [2021-10-28 23:44:34,804 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 23:44:34,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:44:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 23:44:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2021-10-28 23:44:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 36 states have internal predecessors, (45), 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) [2021-10-28 23:44:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2021-10-28 23:44:34,813 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 16 [2021-10-28 23:44:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:34,813 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2021-10-28 23:44:34,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2021-10-28 23:44:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2021-10-28 23:44:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:44:34,815 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:34,815 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:34,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:35,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:35,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1032048289, now seen corresponding path program 1 times [2021-10-28 23:44:35,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:35,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682280718] [2021-10-28 23:44:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:35,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:35,044 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:35,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705641400] [2021-10-28 23:44:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:35,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:35,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:35,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:35,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:44:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:35,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-28 23:44:35,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:35,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:35,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682280718] [2021-10-28 23:44:35,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:35,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705641400] [2021-10-28 23:44:35,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705641400] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:35,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:35,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:44:35,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115960890] [2021-10-28 23:44:35,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:35,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:35,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:35,451 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-28 23:44:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:35,714 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2021-10-28 23:44:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:44:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-10-28 23:44:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:35,716 INFO L225 Difference]: With dead ends: 53 [2021-10-28 23:44:35,716 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 23:44:35,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 23:44:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2021-10-28 23:44:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 37 states have internal predecessors, (47), 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) [2021-10-28 23:44:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-10-28 23:44:35,726 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 16 [2021-10-28 23:44:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:35,726 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-10-28 23:44:35,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-28 23:44:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-10-28 23:44:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:44:35,728 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:35,728 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:35,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:35,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:35,948 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1931404169, now seen corresponding path program 1 times [2021-10-28 23:44:35,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:35,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411842974] [2021-10-28 23:44:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:35,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:35,964 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:35,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266263485] [2021-10-28 23:44:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:35,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:35,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:35,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:35,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:44:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:36,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 23:44:36,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:36,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:36,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411842974] [2021-10-28 23:44:36,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:36,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266263485] [2021-10-28 23:44:36,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266263485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:36,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:36,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:44:36,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728486463] [2021-10-28 23:44:36,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:44:36,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:36,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:44:36,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:44:36,331 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-10-28 23:44:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:36,671 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2021-10-28 23:44:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:44:36,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-10-28 23:44:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:36,677 INFO L225 Difference]: With dead ends: 70 [2021-10-28 23:44:36,677 INFO L226 Difference]: Without dead ends: 54 [2021-10-28 23:44:36,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-28 23:44:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2021-10-28 23:44:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 43 states have internal predecessors, (56), 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) [2021-10-28 23:44:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2021-10-28 23:44:36,696 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 17 [2021-10-28 23:44:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:36,696 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2021-10-28 23:44:36,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-10-28 23:44:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2021-10-28 23:44:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:44:36,698 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:36,698 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:36,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:36,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:36,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1931463751, now seen corresponding path program 1 times [2021-10-28 23:44:36,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:36,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283420004] [2021-10-28 23:44:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:36,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:36,944 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:36,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800538068] [2021-10-28 23:44:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:36,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:36,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:36,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:44:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:37,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 23:44:37,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:37,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:37,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283420004] [2021-10-28 23:44:37,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:37,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800538068] [2021-10-28 23:44:37,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800538068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:37,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:37,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:44:37,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982697028] [2021-10-28 23:44:37,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:37,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:37,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:37,297 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-28 23:44:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:37,600 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2021-10-28 23:44:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:44:37,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-10-28 23:44:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:37,602 INFO L225 Difference]: With dead ends: 61 [2021-10-28 23:44:37,602 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 23:44:37,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:37,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 23:44:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2021-10-28 23:44:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 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) [2021-10-28 23:44:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-10-28 23:44:37,610 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 17 [2021-10-28 23:44:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:37,611 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-10-28 23:44:37,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-28 23:44:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2021-10-28 23:44:37,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 23:44:37,612 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:37,612 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:37,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:37,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-28 23:44:37,831 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:37,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1530166964, now seen corresponding path program 1 times [2021-10-28 23:44:37,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:37,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277076802] [2021-10-28 23:44:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:37,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:37,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:37,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732617584] [2021-10-28 23:44:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:37,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:37,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:37,860 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:37,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:44:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:37,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 23:44:37,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:38,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:38,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277076802] [2021-10-28 23:44:38,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:38,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732617584] [2021-10-28 23:44:38,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732617584] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:38,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:38,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:44:38,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803842628] [2021-10-28 23:44:38,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:44:38,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:38,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:44:38,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:44:38,193 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 23:44:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:38,299 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2021-10-28 23:44:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:44:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-10-28 23:44:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:38,300 INFO L225 Difference]: With dead ends: 66 [2021-10-28 23:44:38,301 INFO L226 Difference]: Without dead ends: 56 [2021-10-28 23:44:38,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:44:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-28 23:44:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-10-28 23:44:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 53 states have internal predecessors, (68), 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) [2021-10-28 23:44:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2021-10-28 23:44:38,318 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 18 [2021-10-28 23:44:38,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:38,319 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2021-10-28 23:44:38,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-10-28 23:44:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2021-10-28 23:44:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:44:38,325 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:38,326 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:38,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:38,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:38,551 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:38,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash 191838595, now seen corresponding path program 2 times [2021-10-28 23:44:38,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:38,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758357873] [2021-10-28 23:44:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:38,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:38,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:38,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767922610] [2021-10-28 23:44:38,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:44:38,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:38,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:38,566 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:38,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:44:38,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:44:38,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:44:38,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-28 23:44:38,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:47,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:47,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758357873] [2021-10-28 23:44:47,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:47,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767922610] [2021-10-28 23:44:47,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767922610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:44:47,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:44:47,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 23:44:47,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866409684] [2021-10-28 23:44:47,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:44:47,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:44:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:44:47,050 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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) [2021-10-28 23:44:47,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:47,898 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2021-10-28 23:44:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:44:47,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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 19 [2021-10-28 23:44:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:47,900 INFO L225 Difference]: With dead ends: 69 [2021-10-28 23:44:47,900 INFO L226 Difference]: Without dead ends: 67 [2021-10-28 23:44:47,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:44:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-28 23:44:47,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2021-10-28 23:44:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 57 states have internal predecessors, (73), 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) [2021-10-28 23:44:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2021-10-28 23:44:47,909 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 19 [2021-10-28 23:44:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:47,910 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2021-10-28 23:44:47,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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) [2021-10-28 23:44:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2021-10-28 23:44:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:44:47,911 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:47,911 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:47,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:48,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 23:44:48,128 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:48,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:48,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1915371903, now seen corresponding path program 1 times [2021-10-28 23:44:48,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:48,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68711332] [2021-10-28 23:44:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:48,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:48,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:48,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590251910] [2021-10-28 23:44:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:48,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:48,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:48,157 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:48,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:44:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:48,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:44:48,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:44:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:44:48,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:44:48,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68711332] [2021-10-28 23:44:48,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:44:48,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590251910] [2021-10-28 23:44:48,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590251910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:44:48,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:44:48,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:44:48,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626640399] [2021-10-28 23:44:48,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:44:48,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:44:48,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:44:48,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:44:48,581 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-28 23:44:53,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:44:53,952 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2021-10-28 23:44:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:44:53,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2021-10-28 23:44:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:44:53,953 INFO L225 Difference]: With dead ends: 77 [2021-10-28 23:44:53,953 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 23:44:53,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:44:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 23:44:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2021-10-28 23:44:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 55 states have internal predecessors, (71), 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) [2021-10-28 23:44:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2021-10-28 23:44:53,965 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 19 [2021-10-28 23:44:53,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:44:53,966 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2021-10-28 23:44:53,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-28 23:44:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2021-10-28 23:44:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:44:53,967 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:44:53,967 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:44:53,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:44:54,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:54,180 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:44:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:44:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1654558476, now seen corresponding path program 1 times [2021-10-28 23:44:54,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:44:54,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7906376] [2021-10-28 23:44:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:54,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:44:54,199 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:44:54,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728644924] [2021-10-28 23:44:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:44:54,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:44:54,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:44:54,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:44:54,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 23:44:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:44:54,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-28 23:44:54,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:45:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:45:01,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:45:01,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7906376] [2021-10-28 23:45:01,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:45:01,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728644924] [2021-10-28 23:45:01,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728644924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:45:01,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:45:01,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 23:45:01,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384936966] [2021-10-28 23:45:01,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:45:01,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:45:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:45:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:45:01,549 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2021-10-28 23:45:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:45:08,448 INFO L93 Difference]: Finished difference Result 92 states and 119 transitions. [2021-10-28 23:45:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:45:08,449 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 20 [2021-10-28 23:45:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:45:08,450 INFO L225 Difference]: With dead ends: 92 [2021-10-28 23:45:08,450 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 23:45:08,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2021-10-28 23:45:08,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 23:45:08,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-10-28 23:45:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 55 states have internal predecessors, (71), 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) [2021-10-28 23:45:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2021-10-28 23:45:08,459 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 20 [2021-10-28 23:45:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:45:08,460 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2021-10-28 23:45:08,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2021-10-28 23:45:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2021-10-28 23:45:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:45:08,461 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:45:08,461 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:45:08,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:45:08,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:45:08,671 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:45:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:45:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash 754316118, now seen corresponding path program 2 times [2021-10-28 23:45:08,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:45:08,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241237424] [2021-10-28 23:45:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:08,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:45:08,683 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:45:08,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433520274] [2021-10-28 23:45:08,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:45:08,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:45:08,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:45:08,694 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:45:08,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 23:45:08,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:45:08,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:45:08,977 WARN L261 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-28 23:45:08,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:45:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:45:10,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:45:10,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241237424] [2021-10-28 23:45:10,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:45:10,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433520274] [2021-10-28 23:45:10,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433520274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:45:10,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:45:10,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-28 23:45:10,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074672293] [2021-10-28 23:45:10,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 23:45:10,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:45:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 23:45:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:45:10,277 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-10-28 23:45:11,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:45:11,312 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2021-10-28 23:45:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:45:11,316 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 20 [2021-10-28 23:45:11,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:45:11,316 INFO L225 Difference]: With dead ends: 97 [2021-10-28 23:45:11,317 INFO L226 Difference]: Without dead ends: 68 [2021-10-28 23:45:11,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2021-10-28 23:45:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-28 23:45:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2021-10-28 23:45:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 59 states have internal predecessors, (75), 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) [2021-10-28 23:45:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2021-10-28 23:45:11,329 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 20 [2021-10-28 23:45:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:45:11,330 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2021-10-28 23:45:11,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2021-10-28 23:45:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2021-10-28 23:45:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:45:11,333 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:45:11,333 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:45:11,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:45:11,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 23:45:11,548 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:45:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:45:11,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1210343271, now seen corresponding path program 1 times [2021-10-28 23:45:11,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:45:11,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380507828] [2021-10-28 23:45:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:11,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:45:11,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:45:11,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121192462] [2021-10-28 23:45:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:11,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:45:11,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:45:11,572 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:45:11,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 23:45:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:45:11,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:45:11,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:45:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:45:12,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:45:12,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380507828] [2021-10-28 23:45:12,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:45:12,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121192462] [2021-10-28 23:45:12,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121192462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:45:12,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:45:12,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:45:12,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861169700] [2021-10-28 23:45:12,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:45:12,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:45:12,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:45:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:45:12,111 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-10-28 23:45:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:45:17,206 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2021-10-28 23:45:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:45:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 20 [2021-10-28 23:45:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:45:17,207 INFO L225 Difference]: With dead ends: 88 [2021-10-28 23:45:17,208 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 23:45:17,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:45:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 23:45:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 60. [2021-10-28 23:45:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 59 states have internal predecessors, (75), 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) [2021-10-28 23:45:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2021-10-28 23:45:17,218 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 20 [2021-10-28 23:45:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:45:17,218 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2021-10-28 23:45:17,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-10-28 23:45:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2021-10-28 23:45:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:45:17,219 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:45:17,219 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:45:17,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:45:17,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 23:45:17,434 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:45:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:45:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash 564664091, now seen corresponding path program 1 times [2021-10-28 23:45:17,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:45:17,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156023502] [2021-10-28 23:45:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:17,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:45:17,443 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:45:17,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471618279] [2021-10-28 23:45:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:17,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:45:17,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:45:17,445 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:45:17,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 23:45:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:45:17,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 23:45:17,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:45:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:45:18,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:45:18,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156023502] [2021-10-28 23:45:18,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:45:18,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471618279] [2021-10-28 23:45:18,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471618279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:45:18,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:45:18,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 23:45:18,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012497336] [2021-10-28 23:45:18,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:45:18,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:45:18,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:45:18,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:45:18,751 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2021-10-28 23:45:30,367 WARN L207 SmtUtils]: Spent 11.06 s on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-10-28 23:45:48,705 WARN L207 SmtUtils]: Spent 18.25 s on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2021-10-28 23:46:01,915 WARN L207 SmtUtils]: Spent 13.09 s on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2021-10-28 23:46:25,637 WARN L207 SmtUtils]: Spent 18.44 s on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-10-28 23:46:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:46:28,334 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2021-10-28 23:46:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:46:28,335 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 20 [2021-10-28 23:46:28,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:46:28,335 INFO L225 Difference]: With dead ends: 79 [2021-10-28 23:46:28,335 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 23:46:28,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 62.1s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:46:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 23:46:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2021-10-28 23:46:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.2982456140350878) internal successors, (74), 59 states have internal predecessors, (74), 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) [2021-10-28 23:46:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2021-10-28 23:46:28,346 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 20 [2021-10-28 23:46:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:46:28,346 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2021-10-28 23:46:28,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2021-10-28 23:46:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2021-10-28 23:46:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:46:28,347 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:46:28,347 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:46:28,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:46:28,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 23:46:28,552 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:46:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:46:28,552 INFO L85 PathProgramCache]: Analyzing trace with hash -245616514, now seen corresponding path program 1 times [2021-10-28 23:46:28,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:46:28,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382818604] [2021-10-28 23:46:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:28,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:46:28,566 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:46:28,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462410488] [2021-10-28 23:46:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:28,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:46:28,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:46:28,580 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:46:28,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 23:46:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:46:28,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 23:46:28,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:46:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:46:30,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:46:30,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382818604] [2021-10-28 23:46:30,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:46:30,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462410488] [2021-10-28 23:46:30,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462410488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:46:30,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:46:30,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 23:46:30,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229227565] [2021-10-28 23:46:30,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:46:30,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:46:30,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:46:30,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:46:30,180 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-10-28 23:46:31,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:46:31,741 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2021-10-28 23:46:31,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:46:31,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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 21 [2021-10-28 23:46:31,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:46:31,743 INFO L225 Difference]: With dead ends: 80 [2021-10-28 23:46:31,743 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 23:46:31,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:46:31,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 23:46:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2021-10-28 23:46:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 63 states have internal predecessors, (79), 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) [2021-10-28 23:46:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2021-10-28 23:46:31,752 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 21 [2021-10-28 23:46:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:46:31,752 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2021-10-28 23:46:31,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2021-10-28 23:46:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2021-10-28 23:46:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:46:31,752 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:46:31,752 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:46:31,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:46:31,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 23:46:31,953 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:46:31,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:46:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash -245556932, now seen corresponding path program 1 times [2021-10-28 23:46:31,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:46:31,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807831493] [2021-10-28 23:46:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:31,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:46:31,966 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:46:31,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378664761] [2021-10-28 23:46:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:31,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:46:31,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:46:31,968 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:46:31,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 23:46:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:46:32,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-28 23:46:32,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:46:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:46:35,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:46:35,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807831493] [2021-10-28 23:46:35,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:46:35,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378664761] [2021-10-28 23:46:35,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378664761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:46:35,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:46:35,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 23:46:35,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102462834] [2021-10-28 23:46:35,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:46:35,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:46:35,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:46:35,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:46:35,659 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-10-28 23:46:41,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:46:41,528 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2021-10-28 23:46:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:46:41,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 21 [2021-10-28 23:46:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:46:41,530 INFO L225 Difference]: With dead ends: 84 [2021-10-28 23:46:41,530 INFO L226 Difference]: Without dead ends: 82 [2021-10-28 23:46:41,530 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:46:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-28 23:46:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2021-10-28 23:46:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 65 states have internal predecessors, (81), 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) [2021-10-28 23:46:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2021-10-28 23:46:41,541 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 21 [2021-10-28 23:46:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:46:41,541 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2021-10-28 23:46:41,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-10-28 23:46:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2021-10-28 23:46:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:46:41,542 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:46:41,543 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:46:41,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:46:41,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 23:46:41,767 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:46:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:46:41,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1135367230, now seen corresponding path program 2 times [2021-10-28 23:46:41,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:46:41,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150432172] [2021-10-28 23:46:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:41,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:46:41,781 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:46:41,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800854333] [2021-10-28 23:46:41,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:46:41,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:46:41,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:46:41,788 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:46:41,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 23:46:42,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:46:42,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:46:42,233 WARN L261 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-28 23:46:42,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:46:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:46:43,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:46:43,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150432172] [2021-10-28 23:46:43,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:46:43,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800854333] [2021-10-28 23:46:43,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800854333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:46:43,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:46:43,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 23:46:43,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646519804] [2021-10-28 23:46:43,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:46:43,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:46:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:46:43,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:46:43,152 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-10-28 23:46:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:46:43,894 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2021-10-28 23:46:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:46:43,895 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 21 [2021-10-28 23:46:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:46:43,896 INFO L225 Difference]: With dead ends: 78 [2021-10-28 23:46:43,896 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 23:46:43,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2021-10-28 23:46:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 23:46:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2021-10-28 23:46:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 65 states have internal predecessors, (81), 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) [2021-10-28 23:46:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2021-10-28 23:46:43,916 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 21 [2021-10-28 23:46:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:46:43,917 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2021-10-28 23:46:43,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-10-28 23:46:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2021-10-28 23:46:43,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:46:43,917 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:46:43,918 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:46:43,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:46:44,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 23:46:44,127 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:46:44,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:46:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash 326020604, now seen corresponding path program 2 times [2021-10-28 23:46:44,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:46:44,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911103421] [2021-10-28 23:46:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:44,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:46:44,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:46:44,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474477777] [2021-10-28 23:46:44,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:46:44,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:46:44,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:46:44,159 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:46:44,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 23:46:44,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:46:44,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:46:44,609 WARN L261 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-28 23:46:44,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:46:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:46:45,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:46:45,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911103421] [2021-10-28 23:46:45,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:46:45,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474477777] [2021-10-28 23:46:45,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474477777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:46:45,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:46:45,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-28 23:46:45,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142338878] [2021-10-28 23:46:45,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 23:46:45,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:46:45,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:46:45,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:46:45,662 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-10-28 23:46:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:46:46,457 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2021-10-28 23:46:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:46:46,457 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 21 [2021-10-28 23:46:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:46:46,458 INFO L225 Difference]: With dead ends: 83 [2021-10-28 23:46:46,458 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 23:46:46,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2021-10-28 23:46:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 23:46:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2021-10-28 23:46:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 69 states have internal predecessors, (86), 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) [2021-10-28 23:46:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2021-10-28 23:46:46,469 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 21 [2021-10-28 23:46:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:46:46,469 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2021-10-28 23:46:46,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-10-28 23:46:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2021-10-28 23:46:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 23:46:46,470 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:46:46,470 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:46:46,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:46:46,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:46:46,671 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:46:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:46:46,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1519233459, now seen corresponding path program 1 times [2021-10-28 23:46:46,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:46:46,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249127629] [2021-10-28 23:46:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:46,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:46:46,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:46:46,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776929486] [2021-10-28 23:46:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:46,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:46:46,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:46:46,696 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:46:46,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 23:46:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:46:47,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:46:47,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:46:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:46:47,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:46:47,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249127629] [2021-10-28 23:46:47,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:46:47,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776929486] [2021-10-28 23:46:47,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776929486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:46:47,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:46:47,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 23:46:47,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362219421] [2021-10-28 23:46:47,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:46:47,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:46:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:46:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:46:47,420 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-28 23:46:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:46:47,813 INFO L93 Difference]: Finished difference Result 137 states and 168 transitions. [2021-10-28 23:46:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:46:47,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 22 [2021-10-28 23:46:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:46:47,815 INFO L225 Difference]: With dead ends: 137 [2021-10-28 23:46:47,815 INFO L226 Difference]: Without dead ends: 108 [2021-10-28 23:46:47,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-10-28 23:46:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-28 23:46:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 77. [2021-10-28 23:46:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 76 states have internal predecessors, (98), 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) [2021-10-28 23:46:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2021-10-28 23:46:47,831 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 22 [2021-10-28 23:46:47,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:46:47,832 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2021-10-28 23:46:47,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2021-10-28 23:46:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2021-10-28 23:46:47,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:46:47,833 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:46:47,833 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:46:47,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:46:48,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:46:48,054 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:46:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:46:48,054 INFO L85 PathProgramCache]: Analyzing trace with hash -275964616, now seen corresponding path program 3 times [2021-10-28 23:46:48,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:46:48,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688130305] [2021-10-28 23:46:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:46:48,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:46:48,064 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:46:48,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994635237] [2021-10-28 23:46:48,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 23:46:48,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:46:48,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:46:48,065 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:46:48,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 23:46:48,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 23:46:48,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:46:48,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-28 23:46:48,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:46:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-28 23:46:51,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:46:51,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688130305] [2021-10-28 23:46:51,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:46:51,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994635237] [2021-10-28 23:46:51,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994635237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:46:51,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:46:51,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:46:51,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127863606] [2021-10-28 23:46:51,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:46:51,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:46:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:46:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2021-10-28 23:46:51,006 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-10-28 23:47:01,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:01,952 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2021-10-28 23:47:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:47:01,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 23 [2021-10-28 23:47:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:01,954 INFO L225 Difference]: With dead ends: 90 [2021-10-28 23:47:01,954 INFO L226 Difference]: Without dead ends: 88 [2021-10-28 23:47:01,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2021-10-28 23:47:01,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-28 23:47:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 65. [2021-10-28 23:47:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.253968253968254) internal successors, (79), 64 states have internal predecessors, (79), 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) [2021-10-28 23:47:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2021-10-28 23:47:01,965 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 23 [2021-10-28 23:47:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:01,965 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2021-10-28 23:47:01,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-10-28 23:47:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2021-10-28 23:47:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:47:01,966 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:01,966 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:01,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-10-28 23:47:02,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:02,171 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:02,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:02,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1052333562, now seen corresponding path program 1 times [2021-10-28 23:47:02,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:02,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257113609] [2021-10-28 23:47:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:02,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:02,189 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:47:02,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919002855] [2021-10-28 23:47:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:02,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:02,207 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:02,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 23:47:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:02,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 23:47:02,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:05,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:05,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257113609] [2021-10-28 23:47:05,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:47:05,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919002855] [2021-10-28 23:47:05,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919002855] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:05,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:47:05,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 23:47:05,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614165837] [2021-10-28 23:47:05,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:47:05,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:05,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:47:05,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:47:05,256 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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) [2021-10-28 23:47:07,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:07,137 INFO L93 Difference]: Finished difference Result 150 states and 185 transitions. [2021-10-28 23:47:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:47:07,138 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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 24 [2021-10-28 23:47:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:07,139 INFO L225 Difference]: With dead ends: 150 [2021-10-28 23:47:07,140 INFO L226 Difference]: Without dead ends: 114 [2021-10-28 23:47:07,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:47:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-28 23:47:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2021-10-28 23:47:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 96 states have internal predecessors, (121), 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) [2021-10-28 23:47:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2021-10-28 23:47:07,159 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 24 [2021-10-28 23:47:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:07,159 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2021-10-28 23:47:07,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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) [2021-10-28 23:47:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2021-10-28 23:47:07,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:47:07,162 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:07,162 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:07,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:07,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 23:47:07,383 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1639827719, now seen corresponding path program 1 times [2021-10-28 23:47:07,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:07,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696640812] [2021-10-28 23:47:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:07,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:07,393 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:47:07,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088308849] [2021-10-28 23:47:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:07,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:07,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:07,395 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:07,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 23:47:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:07,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:47:07,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:08,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 23:47:08,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:08,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696640812] [2021-10-28 23:47:08,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:47:08,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088308849] [2021-10-28 23:47:08,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088308849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:08,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:08,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:47:08,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562036961] [2021-10-28 23:47:08,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:47:08,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:08,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:47:08,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:47:08,221 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-10-28 23:47:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:08,365 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2021-10-28 23:47:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:47:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 26 [2021-10-28 23:47:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:08,367 INFO L225 Difference]: With dead ends: 106 [2021-10-28 23:47:08,367 INFO L226 Difference]: Without dead ends: 100 [2021-10-28 23:47:08,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:47:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-28 23:47:08,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2021-10-28 23:47:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 93 states have internal predecessors, (116), 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) [2021-10-28 23:47:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2021-10-28 23:47:08,391 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 26 [2021-10-28 23:47:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:08,392 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2021-10-28 23:47:08,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-10-28 23:47:08,392 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2021-10-28 23:47:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:47:08,393 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:08,393 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:08,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:08,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 23:47:08,615 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:08,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1002173397, now seen corresponding path program 1 times [2021-10-28 23:47:08,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:08,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063106997] [2021-10-28 23:47:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:08,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:08,624 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:47:08,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77075515] [2021-10-28 23:47:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:08,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:08,626 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:08,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 23:47:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:09,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:47:09,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:09,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:09,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063106997] [2021-10-28 23:47:09,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:47:09,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77075515] [2021-10-28 23:47:09,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77075515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:09,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:47:09,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 23:47:09,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335845754] [2021-10-28 23:47:09,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:47:09,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:47:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:47:09,460 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-10-28 23:47:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:09,677 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2021-10-28 23:47:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:47:09,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 26 [2021-10-28 23:47:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:09,679 INFO L225 Difference]: With dead ends: 161 [2021-10-28 23:47:09,679 INFO L226 Difference]: Without dead ends: 128 [2021-10-28 23:47:09,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:47:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-28 23:47:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 101. [2021-10-28 23:47:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 100 states have internal predecessors, (126), 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) [2021-10-28 23:47:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2021-10-28 23:47:09,706 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 26 [2021-10-28 23:47:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:09,707 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2021-10-28 23:47:09,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-10-28 23:47:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2021-10-28 23:47:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:47:09,708 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:09,708 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:09,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:09,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:09,931 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:09,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1588979411, now seen corresponding path program 2 times [2021-10-28 23:47:09,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:09,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203002888] [2021-10-28 23:47:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:09,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:09,972 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:47:09,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051499959] [2021-10-28 23:47:09,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:47:09,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:09,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:09,974 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:09,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 23:47:10,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:47:10,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:47:10,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 23:47:10,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-28 23:47:11,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:11,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203002888] [2021-10-28 23:47:11,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:47:11,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051499959] [2021-10-28 23:47:11,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051499959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:11,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:11,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:47:11,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242962437] [2021-10-28 23:47:11,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:47:11,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:47:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:47:11,190 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-10-28 23:47:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:18,318 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2021-10-28 23:47:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:47:18,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 26 [2021-10-28 23:47:18,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:18,320 INFO L225 Difference]: With dead ends: 101 [2021-10-28 23:47:18,320 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 23:47:18,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:47:18,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 23:47:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2021-10-28 23:47:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.2708333333333333) internal successors, (122), 96 states have internal predecessors, (122), 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) [2021-10-28 23:47:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2021-10-28 23:47:18,371 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 26 [2021-10-28 23:47:18,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:18,371 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2021-10-28 23:47:18,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-10-28 23:47:18,372 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2021-10-28 23:47:18,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:47:18,372 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:18,373 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:18,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:18,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:18,573 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1999300720, now seen corresponding path program 1 times [2021-10-28 23:47:18,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:18,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419035225] [2021-10-28 23:47:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:18,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:18,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:47:18,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292776955] [2021-10-28 23:47:18,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:18,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:18,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:18,592 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:18,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 23:47:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:19,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 23:47:19,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:19,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:19,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419035225] [2021-10-28 23:47:19,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:47:19,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292776955] [2021-10-28 23:47:19,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292776955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:19,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:47:19,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 23:47:19,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605538320] [2021-10-28 23:47:19,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:47:19,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:47:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:47:19,673 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2021-10-28 23:47:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:20,002 INFO L93 Difference]: Finished difference Result 152 states and 192 transitions. [2021-10-28 23:47:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:47:20,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 28 [2021-10-28 23:47:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:20,003 INFO L225 Difference]: With dead ends: 152 [2021-10-28 23:47:20,003 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 23:47:20,004 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2021-10-28 23:47:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 23:47:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2021-10-28 23:47:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 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) [2021-10-28 23:47:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2021-10-28 23:47:20,018 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 28 [2021-10-28 23:47:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:20,018 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2021-10-28 23:47:20,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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) [2021-10-28 23:47:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2021-10-28 23:47:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 23:47:20,018 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:20,019 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:20,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:20,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:20,219 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:20,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1485315508, now seen corresponding path program 1 times [2021-10-28 23:47:20,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:20,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282240379] [2021-10-28 23:47:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:20,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:20,230 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:47:20,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496698550] [2021-10-28 23:47:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:20,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:20,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:20,256 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:20,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 23:47:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:20,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 23:47:20,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:21,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:21,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282240379] [2021-10-28 23:47:21,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:47:21,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496698550] [2021-10-28 23:47:21,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496698550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:21,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:47:21,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 23:47:21,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835772786] [2021-10-28 23:47:21,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:47:21,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:21,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:47:21,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:47:21,272 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-10-28 23:47:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:21,531 INFO L93 Difference]: Finished difference Result 109 states and 130 transitions. [2021-10-28 23:47:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:47:21,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 30 [2021-10-28 23:47:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:21,532 INFO L225 Difference]: With dead ends: 109 [2021-10-28 23:47:21,533 INFO L226 Difference]: Without dead ends: 42 [2021-10-28 23:47:21,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:47:21,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-28 23:47:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-10-28 23:47:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 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) [2021-10-28 23:47:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-10-28 23:47:21,547 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30 [2021-10-28 23:47:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:21,548 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-10-28 23:47:21,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-10-28 23:47:21,548 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-10-28 23:47:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 23:47:21,549 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:21,549 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:21,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:21,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 23:47:21,778 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:21,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:21,778 INFO L85 PathProgramCache]: Analyzing trace with hash -550563327, now seen corresponding path program 1 times [2021-10-28 23:47:21,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:21,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523211535] [2021-10-28 23:47:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:21,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:21,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:47:21,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215272256] [2021-10-28 23:47:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:21,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:21,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:21,793 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:21,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 23:47:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:22,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 23:47:22,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:23,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:23,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523211535] [2021-10-28 23:47:23,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:47:23,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215272256] [2021-10-28 23:47:23,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215272256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:23,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:47:23,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-28 23:47:23,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450562254] [2021-10-28 23:47:23,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 23:47:23,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 23:47:23,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-28 23:47:23,338 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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) [2021-10-28 23:47:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:23,929 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-10-28 23:47:23,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 23:47:23,929 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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 31 [2021-10-28 23:47:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:23,930 INFO L225 Difference]: With dead ends: 66 [2021-10-28 23:47:23,930 INFO L226 Difference]: Without dead ends: 33 [2021-10-28 23:47:23,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2021-10-28 23:47:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-28 23:47:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-28 23:47:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 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) [2021-10-28 23:47:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-28 23:47:23,940 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2021-10-28 23:47:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:23,940 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-28 23:47:23,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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) [2021-10-28 23:47:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-28 23:47:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 23:47:23,941 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:23,941 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:23,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-10-28 23:47:24,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 23:47:24,142 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:24,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:24,142 INFO L85 PathProgramCache]: Analyzing trace with hash -854633573, now seen corresponding path program 2 times [2021-10-28 23:47:24,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:24,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935941996] [2021-10-28 23:47:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:24,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:24,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:47:24,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589986414] [2021-10-28 23:47:24,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:47:24,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:24,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:24,153 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:24,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 23:47:24,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:47:24,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:47:24,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:47:24,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-10-28 23:47:24,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:24,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935941996] [2021-10-28 23:47:24,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:47:24,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589986414] [2021-10-28 23:47:24,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589986414] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:24,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:24,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:47:24,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724675459] [2021-10-28 23:47:24,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:47:24,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:24,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:47:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:47:24,921 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-28 23:47:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:24,964 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-10-28 23:47:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:47:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 32 [2021-10-28 23:47:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:24,965 INFO L225 Difference]: With dead ends: 33 [2021-10-28 23:47:24,965 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:47:24,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:47:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:47:24,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:47:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-28 23:47:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:47:24,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-28 23:47:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:24,967 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:47:24,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-28 23:47:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:47:24,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:47:24,970 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:47:24,971 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:47:24,971 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:47:25,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:25,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 23:47:25,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:47:25,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:25,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:25,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:25,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:26,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:48:11,381 WARN L207 SmtUtils]: Spent 44.70 s on a formula simplification. DAG size of input: 238 DAG size of output: 83 [2021-10-28 23:48:16,441 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 23:48:16,442 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-10-28 23:48:16,442 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-10-28 23:48:16,442 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:48:16,442 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:48:16,442 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:48:16,442 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 23:48:16,442 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-28 23:48:16,442 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 37 38) the Hoare annotation is: (let ((.cse17 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (let ((.cse12 (= ULTIMATE.start_main_~q~0 .cse17)) (.cse11 (= (mod (+ .cse17 (* ULTIMATE.start_main_~q~0 (- 1))) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) 0)) (.cse16 (not (= ULTIMATE.start_main_~a~0 0))) (.cse4 (+ ULTIMATE.start_main_~a~0 1))) (let ((.cse7 (not (= (mod .cse4 2) 0))) (.cse13 (<= ULTIMATE.start_main_~a~0 5)) (.cse9 (= .cse17 (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)))) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= ULTIMATE.start_main_~x~0 5)) (.cse2 (<= ULTIMATE.start_main_~y~0 5)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (or .cse12 (and .cse11 .cse16))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse10 (+ ULTIMATE.start_main_~b~0 1)) (.cse8 (<= 0 ULTIMATE.start_main_~a~0)) (.cse14 (<= 0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= (div ULTIMATE.start_main_~x~0 2) .cse4) (<= (mod ULTIMATE.start_main_~x~0 2) 0) .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse9 .cse2 .cse3 .cse5 (<= 0 .cse10) .cse7 (not (= (mod .cse10 2) 0)) (or .cse11 .cse12) .cse13 .cse8 .cse14) (and .cse0 .cse9 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) .cse13 .cse14 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (mod ULTIMATE.start_main_~p~0 4) 0) (<= 0 ULTIMATE.start_main_~b~0) (<= (* 2 ULTIMATE.start_main_~a~0) 5) .cse9 .cse5 (or (and .cse0 .cse1 .cse2 .cse3 .cse6 (not (= ULTIMATE.start_main_~b~0 0)) .cse8) (and .cse0 (<= ULTIMATE.start_main_~x~0 .cse4) (exists ((ULTIMATE.start_main_~p~0 Int)) (and (let ((.cse15 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))))) (or (and (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (not .cse15)) (and .cse15 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)))) (<= 1 ULTIMATE.start_main_~p~0))) (<= ULTIMATE.start_main_~y~0 .cse10) (<= 1 ULTIMATE.start_main_~p~0) .cse12 .cse8)) .cse16 .cse14))))) [2021-10-28 23:48:16,442 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-28 23:48:16,443 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-28 23:48:16,443 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-28 23:48:16,443 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse11 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (let ((.cse6 (= ULTIMATE.start_main_~a~0 0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 5)) (.cse2 (= ULTIMATE.start_main_~b~0 0)) (.cse3 (= .cse11 (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)))) (.cse4 (<= ULTIMATE.start_main_~y~0 5)) (.cse10 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (<= 0 ULTIMATE.start_main_~a~0)) (.cse8 (<= 0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (not .cse6) .cse7 .cse8) (let ((.cse9 (div ULTIMATE.start_main_~x~0 2))) (and .cse0 .cse1 (not (= (mod .cse9 2) 0)) .cse4 .cse10 (= .cse9 (+ ULTIMATE.start_main_~a~0 1)) (<= (mod ULTIMATE.start_main_~x~0 2) 0) .cse5 (= ULTIMATE.start_main_~q~0 .cse11) .cse8)) (and .cse6 .cse0 .cse1 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~b~0) .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse10 .cse5 .cse7 .cse8)))) [2021-10-28 23:48:16,443 INFO L857 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2021-10-28 23:48:16,443 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-28 23:48:16,443 INFO L860 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: true [2021-10-28 23:48:16,443 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:48:16,443 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-28 23:48:16,443 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-28 23:48:16,443 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-28 23:48:16,444 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-28 23:48:16,444 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-28 23:48:16,444 INFO L857 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2021-10-28 23:48:16,444 INFO L857 garLoopResultBuilder]: For program point L34-2(lines 34 55) no Hoare annotation was computed. [2021-10-28 23:48:16,444 INFO L860 garLoopResultBuilder]: At program point L59(lines 19 60) the Hoare annotation is: true [2021-10-28 23:48:16,444 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 23:48:16,444 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-10-28 23:48:16,444 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse14 (+ ULTIMATE.start_main_~a~0 1))) (let ((.cse13 (mod .cse14 2))) (let ((.cse4 (<= ULTIMATE.start_main_~a~0 5)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (<= 1 ULTIMATE.start_main_~y~0)) (.cse10 (not (= .cse13 0))) (.cse11 (<= 0 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (<= ULTIMATE.start_main_~x~0 5)) (.cse1 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)))) (.cse2 (<= ULTIMATE.start_main_~y~0 5)) (.cse12 (= (div ULTIMATE.start_main_~x~0 2) .cse14)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse5 (<= 0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 (= ULTIMATE.start_main_~q~0 0) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (let ((.cse9 (+ ULTIMATE.start_main_~b~0 1))) (and .cse0 .cse6 .cse1 .cse2 .cse7 .cse8 (<= 0 .cse9) .cse10 (not (= (mod .cse9 2) 0)) .cse4 .cse11 .cse5)) (and (= (mod ULTIMATE.start_main_~p~0 4) 0) .cse0 .cse6 (<= 0 ULTIMATE.start_main_~b~0) (<= (* 2 ULTIMATE.start_main_~a~0) 5) .cse1 .cse2 .cse7 .cse8 (not (= ULTIMATE.start_main_~b~0 0)) (not (= ULTIMATE.start_main_~a~0 0)) .cse11 .cse5) (and .cse0 .cse6 .cse1 .cse2 .cse7 .cse12 (<= (mod ULTIMATE.start_main_~x~0 2) 0) .cse8 .cse10 .cse11) (and .cse0 .cse6 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (= (mod (* ULTIMATE.start_main_~p~0 3) (- 4)) 0) .cse2 .cse12 (= ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)) (= ULTIMATE.start_main_~b~0 (div ULTIMATE.start_main_~y~0 2)) .cse3 .cse5 (<= 1 .cse13)))))) [2021-10-28 23:48:16,448 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:48:16,449 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:48:16,458 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,459 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,459 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,469 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,469 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,469 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:48:16 BoogieIcfgContainer [2021-10-28 23:48:16,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:48:16,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:48:16,492 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:48:16,492 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:48:16,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:44:24" (3/4) ... [2021-10-28 23:48:16,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:48:16,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 23:48:16,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:48:16,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:48:16,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:48:16,530 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((cond == 1 && x <= 5) && y <= 5) && 1 == cond) && x / 2 == a + 1) && x % 2 <= 0) && 1 <= y) && (q == x * y || ((x * y + q * -1) % (a * b) == 0 && !(a == 0)))) && !((a + 1) % 2 == 0)) && 0 <= a) || ((((((((((((cond == 1 && x <= 5) && x * y == q + a * p * b) && y <= 5) && 1 == cond) && 1 <= y) && 0 <= b + 1) && !((a + 1) % 2 == 0)) && !((b + 1) % 2 == 0)) && ((x * y + q * -1) % (a * b) == 0 || q == x * y)) && a <= 5) && 0 <= a) && 0 <= x)) || (((((((((cond == 1 && x * y == q + a * p * b) && p == 1) && y <= 5) && 1 == cond) && 1 <= b) && q == 0) && a <= 5) && 0 <= x) && b == y)) || (((((((p % 4 == 0 && 0 <= b) && 2 * a <= 5) && x * y == q + a * p * b) && 1 <= y) && (((((((cond == 1 && x <= 5) && y <= 5) && 1 == cond) && (q == x * y || ((x * y + q * -1) % (a * b) == 0 && !(a == 0)))) && !(b == 0)) && 0 <= a) || ((((((cond == 1 && x <= a + 1) && (\exists ULTIMATE.start_main_~p~0 : int :: ((0 == cond && !(x * y == q + a * ULTIMATE.start_main_~p~0 * b)) || (x * y == q + a * ULTIMATE.start_main_~p~0 * b && 1 == cond)) && 1 <= ULTIMATE.start_main_~p~0)) && y <= b + 1) && 1 <= p) && q == x * y) && 0 <= a))) && !(a == 0)) && 0 <= x) [2021-10-28 23:48:16,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:48:16,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:48:16,545 INFO L168 Benchmark]: Toolchain (without parser) took 232933.07 ms. Allocated memory was 96.5 MB in the beginning and 457.2 MB in the end (delta: 360.7 MB). Free memory was 54.9 MB in the beginning and 291.6 MB in the end (delta: -236.8 MB). Peak memory consumption was 123.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:16,545 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:48:16,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.99 ms. Allocated memory is still 96.5 MB. Free memory was 54.6 MB in the beginning and 70.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:16,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.02 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:16,546 INFO L168 Benchmark]: Boogie Preprocessor took 33.32 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 68.0 MB in the end (delta: 951.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:16,546 INFO L168 Benchmark]: RCFGBuilder took 433.44 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 56.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:16,547 INFO L168 Benchmark]: TraceAbstraction took 232015.34 ms. Allocated memory was 96.5 MB in the beginning and 457.2 MB in the end (delta: 360.7 MB). Free memory was 56.4 MB in the beginning and 294.8 MB in the end (delta: -238.3 MB). Peak memory consumption was 342.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:16,547 INFO L168 Benchmark]: Witness Printer took 51.97 ms. Allocated memory is still 457.2 MB. Free memory was 294.8 MB in the beginning and 291.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:48:16,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.99 ms. Allocated memory is still 96.5 MB. Free memory was 54.6 MB in the beginning and 70.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.02 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.32 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 68.0 MB in the end (delta: 951.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 433.44 ms. Allocated memory is still 96.5 MB. Free memory was 68.0 MB in the beginning and 56.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 232015.34 ms. Allocated memory was 96.5 MB in the beginning and 457.2 MB in the end (delta: 360.7 MB). Free memory was 56.4 MB in the beginning and 294.8 MB in the end (delta: -238.3 MB). Peak memory consumption was 342.9 MB. Max. memory is 16.1 GB. * Witness Printer took 51.97 ms. Allocated memory is still 457.2 MB. Free memory was 294.8 MB in the beginning and 291.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 231.8s, OverallIterations: 29, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 126.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 51.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 456 SDtfs, 2053 SDslu, 1243 SDs, 0 SdLazy, 3302 SolverSat, 636 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 46.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 737 GetRequests, 354 SyntacticMatches, 2 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 90.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=24, InterpolantAutomatonStates: 305, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 29 MinimizatonAttempts, 350 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 54 NumberOfFragments, 710 HoareAnnotationTreeSize, 5 FomulaSimplifications, 200151696 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 5 FomulaSimplificationsInter, 65391 FormulaSimplificationTreeSizeReductionInter, 49.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 36.8s InterpolantComputationTime, 605 NumberOfCodeBlocks, 573 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 576 ConstructedInterpolants, 7 QuantifiedInterpolants, 7524 SizeOfPredicates, 270 NumberOfNonLiveVariables, 2709 ConjunctsInSsa, 737 ConjunctsInUnsatCore, 29 InterpolantComputations, 10 PerfectInterpolantSequences, 114/225 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant [2021-10-28 23:48:16,557 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,557 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,557 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,559 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,560 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] [2021-10-28 23:48:16,560 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~p~0,QUANTIFIED] Derived loop invariant: (((((((((((cond == 1 && x <= 5) && y <= 5) && 1 == cond) && x / 2 == a + 1) && x % 2 <= 0) && 1 <= y) && (q == x * y || ((x * y + q * -1) % (a * b) == 0 && !(a == 0)))) && !((a + 1) % 2 == 0)) && 0 <= a) || ((((((((((((cond == 1 && x <= 5) && x * y == q + a * p * b) && y <= 5) && 1 == cond) && 1 <= y) && 0 <= b + 1) && !((a + 1) % 2 == 0)) && !((b + 1) % 2 == 0)) && ((x * y + q * -1) % (a * b) == 0 || q == x * y)) && a <= 5) && 0 <= a) && 0 <= x)) || (((((((((cond == 1 && x * y == q + a * p * b) && p == 1) && y <= 5) && 1 == cond) && 1 <= b) && q == 0) && a <= 5) && 0 <= x) && b == y)) || (((((((p % 4 == 0 && 0 <= b) && 2 * a <= 5) && x * y == q + a * p * b) && 1 <= y) && (((((((cond == 1 && x <= 5) && y <= 5) && 1 == cond) && (q == x * y || ((x * y + q * -1) % (a * b) == 0 && !(a == 0)))) && !(b == 0)) && 0 <= a) || ((((((cond == 1 && x <= a + 1) && (\exists ULTIMATE.start_main_~p~0 : int :: ((0 == cond && !(x * y == q + a * ULTIMATE.start_main_~p~0 * b)) || (x * y == q + a * ULTIMATE.start_main_~p~0 * b && 1 == cond)) && 1 <= ULTIMATE.start_main_~p~0)) && y <= b + 1) && 1 <= p) && q == x * y) && 0 <= a))) && !(a == 0)) && 0 <= x) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && x * y == q + a * p * b) && p == 1) && y <= 5) && 1 <= b) && q == 0) && a <= 5) && 0 <= x) && b == y) || (((((((((((cond == 1 && x <= 5) && x * y == q + a * p * b) && y <= 5) && 1 == cond) && 1 <= y) && 0 <= b + 1) && !((a + 1) % 2 == 0)) && !((b + 1) % 2 == 0)) && a <= 5) && 0 <= a) && 0 <= x)) || ((((((((((((p % 4 == 0 && cond == 1) && x <= 5) && 0 <= b) && 2 * a <= 5) && x * y == q + a * p * b) && y <= 5) && 1 == cond) && 1 <= y) && !(b == 0)) && !(a == 0)) && 0 <= a) && 0 <= x)) || (((((((((cond == 1 && x <= 5) && x * y == q + a * p * b) && y <= 5) && 1 == cond) && x / 2 == a + 1) && x % 2 <= 0) && 1 <= y) && !((a + 1) % 2 == 0)) && 0 <= a)) || (((((((((((cond == 1 && x <= 5) && 1 <= cond) && x * y == q + a * p * b) && p * 3 % -4 == 0) && y <= 5) && x / 2 == a + 1) && q == p * b) && b == y / 2) && 1 <= b) && 0 <= x) && 1 <= (a + 1) % 2) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && x <= 5) && b == 0) && x * y == q + a * p * b) && y <= 5) && 1 <= y) && !(a == 0)) && 0 <= a) && 0 <= x) || (((((((((cond == 1 && x <= 5) && !(x / 2 % 2 == 0)) && y <= 5) && 1 == cond) && x / 2 == a + 1) && x % 2 <= 0) && 1 <= y) && q == x * y) && 0 <= x)) || ((((((a == 0 && cond == 1) && x <= 5) && y <= 5) && 1 <= y) && 1 <= b) && 0 <= x)) || ((((((((cond == 1 && x <= 5) && b == 0) && x * y == q + a * p * b) && y <= 5) && 1 == cond) && 1 <= y) && 0 <= a) && 0 <= x) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:48:16,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f37935-59e9-4b81-86f1-b2dcdc622603/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...