./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa --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 d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:22:48,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:22:48,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:22:48,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:22:48,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:22:48,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:22:48,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:22:48,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:22:48,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:22:48,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:22:48,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:22:48,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:22:48,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:22:48,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:22:48,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:22:48,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:22:48,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:22:48,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:22:48,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:22:48,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:22:48,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:22:48,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:22:48,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:22:48,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:22:48,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:22:48,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:22:48,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:22:48,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:22:48,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:22:48,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:22:48,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:22:48,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:22:48,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:22:48,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:22:48,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:22:48,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:22:48,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:22:48,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:22:48,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:22:48,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:22:48,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:22:48,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:22:48,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:22:48,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:22:48,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:22:48,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:22:48,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:22:48,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:22:48,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:22:48,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:22:48,258 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:22:48,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:22:48,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:22:48,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:22:48,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:22:48,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:22:48,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:22:48,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:22:48,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:22:48,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:22:48,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:22:48,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:22:48,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:22:48,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:22:48,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:22:48,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:22:48,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:22:48,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:22:48,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:22:48,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:22:48,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:22:48,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:22:48,262 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:22:48,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:22:48,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:22:48,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:22:48,263 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_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8ee33f278cd93a3b1e0d551730c6407889b70e338ebc3c857541220d9b0f75f [2021-12-07 00:22:48,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:22:48,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:22:48,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:22:48,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:22:48,483 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:22:48,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2021-12-07 00:22:48,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/data/c83f51253/10b5217d2ac7465eaab81705d43dc650/FLAG2be5eaaff [2021-12-07 00:22:48,907 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:22:48,908 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2021-12-07 00:22:48,912 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/data/c83f51253/10b5217d2ac7465eaab81705d43dc650/FLAG2be5eaaff [2021-12-07 00:22:48,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/data/c83f51253/10b5217d2ac7465eaab81705d43dc650 [2021-12-07 00:22:48,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:22:48,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:22:48,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:22:48,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:22:48,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:22:48,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:22:48" (1/1) ... [2021-12-07 00:22:48,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d996211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:48, skipping insertion in model container [2021-12-07 00:22:48,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:22:48" (1/1) ... [2021-12-07 00:22:48,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:22:48,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:22:49,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c[597,610] [2021-12-07 00:22:49,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:22:49,082 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:22:49,092 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound10.c[597,610] [2021-12-07 00:22:49,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:22:49,109 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:22:49,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49 WrapperNode [2021-12-07 00:22:49,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:22:49,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:22:49,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:22:49,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:22:49,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,135 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-12-07 00:22:49,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:22:49,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:22:49,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:22:49,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:22:49,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:22:49,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:22:49,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:22:49,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:22:49,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (1/1) ... [2021-12-07 00:22:49,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:22:49,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:49,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:22:49,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:22:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:22:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:22:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:22:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:22:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 00:22:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 00:22:49,287 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:22:49,288 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:22:49,365 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:22:49,370 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:22:49,370 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:22:49,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:22:49 BoogieIcfgContainer [2021-12-07 00:22:49,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:22:49,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:22:49,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:22:49,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:22:49,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:22:48" (1/3) ... [2021-12-07 00:22:49,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60cc3957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:22:49, skipping insertion in model container [2021-12-07 00:22:49,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:22:49" (2/3) ... [2021-12-07 00:22:49,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60cc3957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:22:49, skipping insertion in model container [2021-12-07 00:22:49,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:22:49" (3/3) ... [2021-12-07 00:22:49,378 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.c [2021-12-07 00:22:49,382 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:22:49,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:22:49,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:22:49,425 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 [2021-12-07 00:22:49,425 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:22:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:22:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 00:22:49,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:49,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:49,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:49,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2021-12-07 00:22:49,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:49,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709155662] [2021-12-07 00:22:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:49,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:49,522 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:22:49,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142443486] [2021-12-07 00:22:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:49,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:49,524 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:49,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:22:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:49,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:22:49,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:22:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:22:49,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:22:49,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:49,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709155662] [2021-12-07 00:22:49,683 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:22:49,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142443486] [2021-12-07 00:22:49,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142443486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:22:49,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:22:49,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:22:49,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11676183] [2021-12-07 00:22:49,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:22:49,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:22:49,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:49,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:22:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:22:49,712 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:49,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:49,793 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2021-12-07 00:22:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:22:49,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 00:22:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:49,801 INFO L225 Difference]: With dead ends: 54 [2021-12-07 00:22:49,801 INFO L226 Difference]: Without dead ends: 25 [2021-12-07 00:22:49,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:22:49,806 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:49,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 70 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-07 00:22:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-12-07 00:22:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:22:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-07 00:22:49,834 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2021-12-07 00:22:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:49,834 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-07 00:22:49,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:22:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-12-07 00:22:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 00:22:49,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:49,835 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:49,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:22:50,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-07 00:22:50,038 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:50,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2021-12-07 00:22:50,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:50,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810654714] [2021-12-07 00:22:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:50,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:50,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:22:50,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280432430] [2021-12-07 00:22:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:50,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:50,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:50,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:50,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:22:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:50,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:22:50,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:22:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:22:50,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:22:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:22:50,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810654714] [2021-12-07 00:22:50,416 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:22:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280432430] [2021-12-07 00:22:50,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280432430] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:22:50,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:22:50,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-12-07 00:22:50,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070069654] [2021-12-07 00:22:50,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:22:50,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:22:50,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:22:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:22:50,418 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:22:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:50,617 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-12-07 00:22:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:22:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-12-07 00:22:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:50,619 INFO L225 Difference]: With dead ends: 41 [2021-12-07 00:22:50,619 INFO L226 Difference]: Without dead ends: 34 [2021-12-07 00:22:50,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:22:50,621 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:50,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 85 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:22:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-07 00:22:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-12-07 00:22:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-07 00:22:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-12-07 00:22:50,627 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2021-12-07 00:22:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:50,627 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-12-07 00:22:50,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:22:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-12-07 00:22:50,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-07 00:22:50,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:50,628 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:50,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:22:50,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:50,830 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:50,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2021-12-07 00:22:50,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:50,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017253265] [2021-12-07 00:22:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:50,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:50,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:22:50,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504070273] [2021-12-07 00:22:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:50,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:50,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:50,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:50,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:22:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:50,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:22:50,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:22:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:22:50,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:22:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:22:50,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:51,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017253265] [2021-12-07 00:22:51,000 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:22:51,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504070273] [2021-12-07 00:22:51,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504070273] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:22:51,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:22:51,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-12-07 00:22:51,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734798539] [2021-12-07 00:22:51,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:22:51,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:22:51,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:51,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:22:51,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:22:51,002 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:22:51,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:51,054 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2021-12-07 00:22:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:22:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2021-12-07 00:22:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:51,055 INFO L225 Difference]: With dead ends: 73 [2021-12-07 00:22:51,055 INFO L226 Difference]: Without dead ends: 67 [2021-12-07 00:22:51,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:22:51,057 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:51,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 100 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:51,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-07 00:22:51,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2021-12-07 00:22:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-07 00:22:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-12-07 00:22:51,065 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2021-12-07 00:22:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:51,066 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-12-07 00:22:51,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:22:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-12-07 00:22:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-07 00:22:51,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:51,067 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:51,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:22:51,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-07 00:22:51,269 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:51,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2021-12-07 00:22:51,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:51,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695236535] [2021-12-07 00:22:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:51,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:51,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:22:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063489526] [2021-12-07 00:22:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:51,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:51,299 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:51,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:22:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:51,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:22:51,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:22:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:22:51,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:22:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:22:51,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695236535] [2021-12-07 00:22:51,925 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:22:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063489526] [2021-12-07 00:22:51,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063489526] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:22:51,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:22:51,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2021-12-07 00:22:51,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886456681] [2021-12-07 00:22:51,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:22:51,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 00:22:51,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 00:22:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:22:51,927 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-07 00:22:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:52,546 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2021-12-07 00:22:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 00:22:52,547 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2021-12-07 00:22:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:52,548 INFO L225 Difference]: With dead ends: 65 [2021-12-07 00:22:52,549 INFO L226 Difference]: Without dead ends: 57 [2021-12-07 00:22:52,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=256, Invalid=1226, Unknown=0, NotChecked=0, Total=1482 [2021-12-07 00:22:52,551 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:52,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 125 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:22:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-07 00:22:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2021-12-07 00:22:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-07 00:22:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-12-07 00:22:52,561 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2021-12-07 00:22:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:52,561 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-12-07 00:22:52,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-07 00:22:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-12-07 00:22:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-07 00:22:52,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:52,563 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:52,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:22:52,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:52,763 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:52,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2021-12-07 00:22:52,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:52,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132210632] [2021-12-07 00:22:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:52,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:52,772 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:22:52,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328650727] [2021-12-07 00:22:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:52,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:52,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:52,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:52,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:22:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:22:52,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:22:52,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:22:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:22:52,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:22:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:22:52,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:52,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132210632] [2021-12-07 00:22:52,941 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:22:52,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328650727] [2021-12-07 00:22:52,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328650727] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:22:52,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:22:52,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-12-07 00:22:52,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734887193] [2021-12-07 00:22:52,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:22:52,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:22:52,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:52,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:22:52,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:22:52,943 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 00:22:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:53,052 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2021-12-07 00:22:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 00:22:53,052 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2021-12-07 00:22:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:53,054 INFO L225 Difference]: With dead ends: 116 [2021-12-07 00:22:53,054 INFO L226 Difference]: Without dead ends: 110 [2021-12-07 00:22:53,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:22:53,055 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 104 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:53,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 160 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:22:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-07 00:22:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-12-07 00:22:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-07 00:22:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2021-12-07 00:22:53,067 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 49 [2021-12-07 00:22:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:53,068 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2021-12-07 00:22:53,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 00:22:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2021-12-07 00:22:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:22:53,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:53,071 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:53,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:22:53,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:53,272 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:53,272 INFO L85 PathProgramCache]: Analyzing trace with hash 297311502, now seen corresponding path program 2 times [2021-12-07 00:22:53,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:53,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952365536] [2021-12-07 00:22:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:53,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:53,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:22:53,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201353410] [2021-12-07 00:22:53,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:22:53,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:53,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:53,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:53,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:22:53,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:22:53,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:22:53,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-07 00:22:53,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:22:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-07 00:22:54,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:22:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-07 00:22:55,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:22:55,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952365536] [2021-12-07 00:22:55,912 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:22:55,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201353410] [2021-12-07 00:22:55,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201353410] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:22:55,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:22:55,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 48 [2021-12-07 00:22:55,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701070710] [2021-12-07 00:22:55,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:22:55,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-07 00:22:55,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:22:55,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-07 00:22:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1941, Unknown=0, NotChecked=0, Total=2256 [2021-12-07 00:22:55,916 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 48 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 22 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-07 00:22:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:22:57,177 INFO L93 Difference]: Finished difference Result 220 states and 244 transitions. [2021-12-07 00:22:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-07 00:22:57,177 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 22 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 109 [2021-12-07 00:22:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:22:57,179 INFO L225 Difference]: With dead ends: 220 [2021-12-07 00:22:57,179 INFO L226 Difference]: Without dead ends: 212 [2021-12-07 00:22:57,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=568, Invalid=3338, Unknown=0, NotChecked=0, Total=3906 [2021-12-07 00:22:57,182 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 86 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:22:57,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 853 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:22:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-07 00:22:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 200. [2021-12-07 00:22:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 160 states have (on average 1.125) internal successors, (180), 160 states have internal predecessors, (180), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-07 00:22:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2021-12-07 00:22:57,201 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 109 [2021-12-07 00:22:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:22:57,201 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2021-12-07 00:22:57,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 22 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-07 00:22:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2021-12-07 00:22:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:22:57,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:22:57,204 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:22:57,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:22:57,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 00:22:57,405 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:22:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:22:57,405 INFO L85 PathProgramCache]: Analyzing trace with hash 977369872, now seen corresponding path program 1 times [2021-12-07 00:22:57,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:22:57,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834568851] [2021-12-07 00:22:57,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:57,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:22:57,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:22:57,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140005887] [2021-12-07 00:22:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:22:57,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:22:57,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:22:57,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:22:57,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:22:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:22:57,484 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:22:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:22:57,556 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:22:57,556 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 00:22:57,557 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 00:22:57,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:22:57,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-07 00:22:57,768 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-12-07 00:22:57,776 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:22:57,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:22:57 BoogieIcfgContainer [2021-12-07 00:22:57,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:22:57,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:22:57,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:22:57,847 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:22:57,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:22:49" (3/4) ... [2021-12-07 00:22:57,848 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 00:22:57,899 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:22:57,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:22:57,899 INFO L158 Benchmark]: Toolchain (without parser) took 8974.96ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 65.8MB in the beginning and 97.2MB in the end (delta: -31.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:22:57,899 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:22:57,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.84ms. Allocated memory is still 109.1MB. Free memory was 65.6MB in the beginning and 55.5MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 00:22:57,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.01ms. Allocated memory is still 109.1MB. Free memory was 55.3MB in the beginning and 53.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:22:57,900 INFO L158 Benchmark]: Boogie Preprocessor took 17.84ms. Allocated memory is still 109.1MB. Free memory was 53.8MB in the beginning and 52.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:22:57,900 INFO L158 Benchmark]: RCFGBuilder took 216.75ms. Allocated memory is still 109.1MB. Free memory was 52.8MB in the beginning and 81.0MB in the end (delta: -28.2MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-12-07 00:22:57,901 INFO L158 Benchmark]: TraceAbstraction took 8473.74ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 80.2MB in the beginning and 103.5MB in the end (delta: -23.3MB). Peak memory consumption was 75.3MB. Max. memory is 16.1GB. [2021-12-07 00:22:57,901 INFO L158 Benchmark]: Witness Printer took 52.10ms. Allocated memory is still 134.2MB. Free memory was 103.5MB in the beginning and 97.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-07 00:22:57,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 109.1MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.84ms. Allocated memory is still 109.1MB. Free memory was 65.6MB in the beginning and 55.5MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.01ms. Allocated memory is still 109.1MB. Free memory was 55.3MB in the beginning and 53.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.84ms. Allocated memory is still 109.1MB. Free memory was 53.8MB in the beginning and 52.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.75ms. Allocated memory is still 109.1MB. Free memory was 52.8MB in the beginning and 81.0MB in the end (delta: -28.2MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8473.74ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 80.2MB in the beginning and 103.5MB in the end (delta: -23.3MB). Peak memory consumption was 75.3MB. Max. memory is 16.1GB. * Witness Printer took 52.10ms. Allocated memory is still 134.2MB. Free memory was 103.5MB in the beginning and 97.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=-33, x=0, X=37, y=0, Y=2] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-33, x=0, X=37, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-33, x=0, x=0, x=0, X=37, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-33, x=0, x=0, X=37, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-33, x=0, x=0, X=37, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-29, x=0, x=0, X=37, x=0, y=0, Y=2] [L45] x++ VAL [counter=1, v=-29, x=1, X=37, x=0, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-29, X=37, x=0, x=0, x=1, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-29, x=1, x=0, x=2, X=37, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-29, x=0, x=1, x=2, X=37, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-29, x=1, x=0, X=37, x=2, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-25, X=37, x=1, x=0, x=2, y=0, Y=2] [L45] x++ VAL [counter=2, v=-25, x=2, x=2, X=37, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-25, x=2, x=2, X=37, x=0, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-25, x=2, X=37, x=4, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=-25, X=37, x=2, x=0, x=4, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-25, x=2, X=37, x=0, x=4, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-21, x=4, x=0, X=37, x=2, Y=2, y=0] [L45] x++ VAL [counter=3, v=-21, x=4, X=37, x=0, x=3, y=0, Y=2] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-21, x=3, x=0, X=37, x=4, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-21, X=37, x=0, x=3, x=6, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-21, x=6, x=3, X=37, x=0, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-21, x=0, x=6, x=3, X=37, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=-17, x=0, x=6, x=3, X=37, Y=2, y=0] [L45] x++ VAL [counter=4, v=-17, x=4, x=0, x=6, X=37, Y=2, y=0] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=-17, x=0, x=6, X=37, x=4, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=-17, X=37, x=0, x=8, x=4, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=-17, x=8, x=0, X=37, x=4, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=-17, x=0, X=37, x=4, x=8, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=5, v=-13, x=8, x=4, x=0, X=37, Y=2, y=0] [L45] x++ VAL [counter=5, v=-13, x=8, X=37, x=5, x=0, y=0, Y=2] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-13, x=8, X=37, x=5, x=0, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=-13, x=0, X=37, x=5, x=10, Y=2, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=-13, X=37, x=0, x=5, x=10, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=6, v=-13, x=5, X=37, x=0, x=10, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=6, v=-9, x=5, x=10, x=0, X=37, Y=2, y=0] [L45] x++ VAL [counter=6, v=-9, x=6, X=37, x=10, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=-9, x=6, x=0, x=10, X=37, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=-9, x=6, X=37, x=12, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=-9, x=6, x=0, x=12, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=7, v=-9, x=6, x=12, X=37, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=7, v=-5, X=37, x=6, x=12, x=0, y=0, Y=2] [L45] x++ VAL [counter=7, v=-5, x=7, X=37, x=0, x=12, Y=2, y=0] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=-5, x=12, X=37, x=0, x=7, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=-5, x=14, x=7, x=0, X=37, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=-5, x=7, x=14, X=37, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=8, v=-5, x=0, x=7, X=37, x=14, Y=2, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=8, v=-1, x=14, X=37, x=0, x=7, y=0, Y=2] [L45] x++ VAL [counter=8, v=-1, x=0, X=37, x=14, x=8, Y=2, y=0] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=-1, x=0, X=37, x=14, x=8, y=0, Y=2] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=-1, x=8, x=16, X=37, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=-1, x=16, x=0, x=8, X=37, y=0, Y=2] [L35] COND FALSE !(!(x <= X)) VAL [counter=9, v=-1, X=37, x=16, x=8, x=0, y=0, Y=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=9, v=3, X=37, x=8, x=0, x=16, Y=2, y=0] [L45] x++ VAL [counter=9, v=3, x=9, x=16, X=37, x=0, Y=2, y=0] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=3, X=37, x=9, x=0, x=16, Y=2, y=0] [L31] COND TRUE counter++<10 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=3, x=9, X=37, x=18, x=0, y=0, Y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=3, x=9, x=18, X=37, x=0, Y=2, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=10, v=3, x=9, X=37, x=0, x=18, Y=2, y=0] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=10, v=-67, x=18, x=9, X=37, x=0, y=1, Y=2] [L45] x++ VAL [counter=10, v=-67, x=0, X=37, x=18, x=10, y=1, Y=2] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-67, X=37, x=18, x=0, x=10, y=1, Y=2] [L31] COND FALSE !(counter++<10) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=11, v=-67, x=10, x=20, x=10, X=37, y=1, Y=2] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=11] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 324 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 323 mSDsluCounter, 1393 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1282 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2505 IncrementalHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 111 mSDtfsCounter, 2505 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 487 GetRequests, 337 SyntacticMatches, 3 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=6, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 3406 SizeOfPredicates, 21 NumberOfNonLiveVariables, 756 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 468/1174 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-07 00:22:57,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eab818f8-ba40-4020-a7e7-53732f193a25/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE