./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY --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 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:36:44,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:36:44,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:36:44,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:36:44,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:36:44,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:36:44,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:36:44,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:36:44,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:36:44,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:36:44,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:36:44,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:36:44,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:36:44,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:36:44,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:36:44,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:36:44,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:36:44,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:36:44,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:36:44,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:36:44,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:36:44,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:36:44,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:36:44,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:36:44,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:36:44,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:36:44,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:36:44,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:36:44,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:36:44,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:36:44,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:36:44,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:36:44,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:36:44,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:36:44,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:36:44,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:36:44,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:36:44,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:36:44,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:36:44,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:36:44,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:36:44,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:36:44,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:36:44,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:36:44,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:36:44,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:36:44,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:36:44,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:36:44,950 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:36:44,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:36:44,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:36:44,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:36:44,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:36:44,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:36:44,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:36:44,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:36:44,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:36:44,954 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:36:44,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:36:44,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:36:44,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:36:44,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:36:44,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:36:44,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:36:44,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:36:44,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:36:44,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:36:44,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:36:44,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:36:44,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:36:44,958 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:36:44,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:36:44,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:36:44,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:36:44,962 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_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 [2021-11-07 08:36:45,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:36:45,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:36:45,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:36:45,364 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:36:45,365 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:36:45,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2021-11-07 08:36:45,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/data/7b9f6e593/7e5fedc6c9e64ecf9fd3b2cb4b6ef687/FLAG3c6bcca8e [2021-11-07 08:36:45,923 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:36:45,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2021-11-07 08:36:45,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/data/7b9f6e593/7e5fedc6c9e64ecf9fd3b2cb4b6ef687/FLAG3c6bcca8e [2021-11-07 08:36:46,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/data/7b9f6e593/7e5fedc6c9e64ecf9fd3b2cb4b6ef687 [2021-11-07 08:36:46,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:36:46,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:36:46,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:36:46,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:36:46,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:36:46,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a08893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46, skipping insertion in model container [2021-11-07 08:36:46,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:36:46,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:36:46,537 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2021-11-07 08:36:46,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:36:46,604 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:36:46,621 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2021-11-07 08:36:46,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:36:46,670 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:36:46,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46 WrapperNode [2021-11-07 08:36:46,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:36:46,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:36:46,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:36:46,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:36:46,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:36:46,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:36:46,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:36:46,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:36:46,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:36:46,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:36:46,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:36:46,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:36:46,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (1/1) ... [2021-11-07 08:36:46,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:36:46,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:36:46,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:36:46,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:36:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:36:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:36:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:36:46,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:36:49,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:36:49,239 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2021-11-07 08:36:49,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:36:49 BoogieIcfgContainer [2021-11-07 08:36:49,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:36:49,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:36:49,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:36:49,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:36:49,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:36:46" (1/3) ... [2021-11-07 08:36:49,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b550ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:36:49, skipping insertion in model container [2021-11-07 08:36:49,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:36:46" (2/3) ... [2021-11-07 08:36:49,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b550ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:36:49, skipping insertion in model container [2021-11-07 08:36:49,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:36:49" (3/3) ... [2021-11-07 08:36:49,249 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2021-11-07 08:36:49,255 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:36:49,255 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-07 08:36:49,313 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:36:49,318 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:36:49,318 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-07 08:36:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 40 states have (on average 1.675) internal successors, (67), 49 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 08:36:49,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:49,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:49,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:36:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2021-11-07 08:36:49,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:36:49,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542180016] [2021-11-07 08:36:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:49,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:36:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:49,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:36:49,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542180016] [2021-11-07 08:36:49,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542180016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:49,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:49,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:36:49,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409548046] [2021-11-07 08:36:49,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:36:49,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:36:49,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:36:49,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:36:49,539 INFO L87 Difference]: Start difference. First operand has 50 states, 40 states have (on average 1.675) internal successors, (67), 49 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:49,558 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2021-11-07 08:36:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:36:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 08:36:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:49,568 INFO L225 Difference]: With dead ends: 97 [2021-11-07 08:36:49,568 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 08:36:49,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:36:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 08:36:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-07 08:36:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-11-07 08:36:49,606 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2021-11-07 08:36:49,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:49,607 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-11-07 08:36:49,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:49,607 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-11-07 08:36:49,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 08:36:49,608 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:49,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:49,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:36:49,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:36:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:49,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2021-11-07 08:36:49,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:36:49,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396272217] [2021-11-07 08:36:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:49,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:36:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:49,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:36:49,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396272217] [2021-11-07 08:36:49,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396272217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:49,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:49,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:36:49,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894659542] [2021-11-07 08:36:49,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:36:49,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:36:49,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:36:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:36:49,964 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:50,869 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2021-11-07 08:36:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:36:50,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 08:36:50,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:50,872 INFO L225 Difference]: With dead ends: 122 [2021-11-07 08:36:50,872 INFO L226 Difference]: Without dead ends: 84 [2021-11-07 08:36:50,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:36:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-07 08:36:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2021-11-07 08:36:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-11-07 08:36:50,886 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 11 [2021-11-07 08:36:50,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:50,887 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-11-07 08:36:50,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:50,887 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-11-07 08:36:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 08:36:50,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:50,888 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:50,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:36:50,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:36:50,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:50,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1870389148, now seen corresponding path program 1 times [2021-11-07 08:36:50,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:36:50,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270305631] [2021-11-07 08:36:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:50,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:36:50,928 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:36:50,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824497780] [2021-11-07 08:36:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:50,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:36:50,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:36:50,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:36:50,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:36:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:51,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:36:51,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:51,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:36:51,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270305631] [2021-11-07 08:36:51,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:36:51,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824497780] [2021-11-07 08:36:51,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824497780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:51,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:51,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:36:51,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863180882] [2021-11-07 08:36:51,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:36:51,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:36:51,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:36:51,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:51,143 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:52,987 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2021-11-07 08:36:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:36:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 08:36:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:52,990 INFO L225 Difference]: With dead ends: 101 [2021-11-07 08:36:52,991 INFO L226 Difference]: Without dead ends: 85 [2021-11-07 08:36:52,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:36:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-07 08:36:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2021-11-07 08:36:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.25) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-11-07 08:36:53,003 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 13 [2021-11-07 08:36:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:53,004 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-11-07 08:36:53,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:36:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-11-07 08:36:53,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 08:36:53,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:53,005 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:53,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:36:53,232 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:36:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2021-11-07 08:36:53,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:36:53,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008679222] [2021-11-07 08:36:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:53,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:36:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:53,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:36:53,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008679222] [2021-11-07 08:36:53,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008679222] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:36:53,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484454479] [2021-11-07 08:36:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:53,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:36:53,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:36:53,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:36:53,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:36:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:53,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 08:36:53,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:53,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484454479] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:36:53,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:36:53,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-11-07 08:36:53,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727972176] [2021-11-07 08:36:53,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:36:53,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:36:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:36:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:36:53,897 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:13,078 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2021-11-07 08:37:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:37:13,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 08:37:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:13,080 INFO L225 Difference]: With dead ends: 154 [2021-11-07 08:37:13,080 INFO L226 Difference]: Without dead ends: 98 [2021-11-07 08:37:13,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:37:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-07 08:37:13,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-11-07 08:37:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 89 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2021-11-07 08:37:13,097 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 13 [2021-11-07 08:37:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:13,098 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2021-11-07 08:37:13,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2021-11-07 08:37:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 08:37:13,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:13,099 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:13,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:37:13,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:37:13,307 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:37:13,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2021-11-07 08:37:13,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:37:13,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434986390] [2021-11-07 08:37:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:13,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:37:13,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:37:13,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637503852] [2021-11-07 08:37:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:13,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:37:13,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:37:13,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:37:13,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:37:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:37:13,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 08:37:13,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:37:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:13,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:37:13,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434986390] [2021-11-07 08:37:13,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:37:13,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637503852] [2021-11-07 08:37:13,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637503852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:37:13,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:37:13,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:37:13,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473207066] [2021-11-07 08:37:13,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:37:13,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:37:13,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:37:13,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:37:13,608 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:21,017 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2021-11-07 08:37:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:37:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 08:37:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:21,021 INFO L225 Difference]: With dead ends: 96 [2021-11-07 08:37:21,021 INFO L226 Difference]: Without dead ends: 77 [2021-11-07 08:37:21,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:37:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-07 08:37:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-11-07 08:37:21,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 76 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2021-11-07 08:37:21,033 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 15 [2021-11-07 08:37:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:21,033 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2021-11-07 08:37:21,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2021-11-07 08:37:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 08:37:21,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:21,035 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:21,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 08:37:21,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:37:21,239 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:37:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:21,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2021-11-07 08:37:21,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:37:21,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702537812] [2021-11-07 08:37:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:21,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:37:21,261 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:37:21,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007110735] [2021-11-07 08:37:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:21,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:37:21,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:37:21,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:37:21,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:37:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:37:21,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:37:21,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:37:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:37:21,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:37:21,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702537812] [2021-11-07 08:37:21,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:37:21,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007110735] [2021-11-07 08:37:21,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007110735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:37:21,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:37:21,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:37:21,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068279950] [2021-11-07 08:37:21,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:37:21,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:37:21,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:37:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:37:21,534 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:22,746 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2021-11-07 08:37:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:37:22,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 08:37:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:22,747 INFO L225 Difference]: With dead ends: 79 [2021-11-07 08:37:22,747 INFO L226 Difference]: Without dead ends: 77 [2021-11-07 08:37:22,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:37:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-07 08:37:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-11-07 08:37:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-11-07 08:37:22,757 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 17 [2021-11-07 08:37:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:22,757 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-11-07 08:37:22,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:37:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-11-07 08:37:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 08:37:22,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:22,759 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:22,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 08:37:22,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:37:22,963 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-07 08:37:22,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:22,963 INFO L85 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2021-11-07 08:37:22,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:37:22,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343110006] [2021-11-07 08:37:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:22,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:37:22,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:37:23,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441604975] [2021-11-07 08:37:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:23,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:37:23,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:37:23,005 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:37:23,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_394d6b8e-2ea7-4cf6-9db7-dc9f6f61aa0f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process