./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt --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 02b49c30f483a6aa3961a4e1c70cfb198ad8047e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:24:13,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:24:13,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:24:13,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:24:13,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:24:13,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:24:13,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:24:13,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:24:13,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:24:14,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:24:14,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:24:14,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:24:14,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:24:14,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:24:14,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:24:14,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:24:14,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:24:14,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:24:14,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:24:14,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:24:14,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:24:14,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:24:14,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:24:14,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:24:14,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:24:14,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:24:14,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:24:14,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:24:14,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:24:14,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:24:14,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:24:14,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:24:14,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:24:14,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:24:14,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:24:14,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:24:14,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:24:14,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:24:14,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:24:14,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:24:14,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:24:14,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:24:14,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:24:14,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:24:14,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:24:14,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:24:14,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:24:14,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:24:14,113 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:24:14,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:24:14,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:24:14,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:24:14,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:24:14,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:24:14,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:24:14,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:24:14,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:24:14,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:24:14,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:24:14,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:24:14,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:24:14,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:24:14,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:24:14,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:24:14,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:24:14,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:24:14,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:24:14,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:24:14,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:24:14,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:24:14,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:24:14,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:24:14,119 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_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b49c30f483a6aa3961a4e1c70cfb198ad8047e [2021-10-13 00:24:14,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:24:14,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:24:14,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:24:14,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:24:14,422 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:24:14,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound2.c [2021-10-13 00:24:14,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/data/1c934d439/f5868fe7d8a445bd9930f096ab4aaf75/FLAGab9fad8ea [2021-10-13 00:24:14,946 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:24:14,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound2.c [2021-10-13 00:24:14,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/data/1c934d439/f5868fe7d8a445bd9930f096ab4aaf75/FLAGab9fad8ea [2021-10-13 00:24:15,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/data/1c934d439/f5868fe7d8a445bd9930f096ab4aaf75 [2021-10-13 00:24:15,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:24:15,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:24:15,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:24:15,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:24:15,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:24:15,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49df6b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15, skipping insertion in model container [2021-10-13 00:24:15,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:24:15,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:24:15,507 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_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound2.c[458,471] [2021-10-13 00:24:15,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:24:15,574 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:24:15,596 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_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound2.c[458,471] [2021-10-13 00:24:15,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:24:15,638 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:24:15,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15 WrapperNode [2021-10-13 00:24:15,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:24:15,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:24:15,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:24:15,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:24:15,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:24:15,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:24:15,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:24:15,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:24:15,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:24:15,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:24:15,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:24:15,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:24:15,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (1/1) ... [2021-10-13 00:24:15,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:24:15,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:15,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:15,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:24:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:24:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:24:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:24:15,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:24:16,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:24:16,008 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-13 00:24:16,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:24:16 BoogieIcfgContainer [2021-10-13 00:24:16,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:24:16,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:24:16,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:24:16,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:24:16,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:24:15" (1/3) ... [2021-10-13 00:24:16,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3767139b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:24:16, skipping insertion in model container [2021-10-13 00:24:16,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:15" (2/3) ... [2021-10-13 00:24:16,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3767139b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:24:16, skipping insertion in model container [2021-10-13 00:24:16,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:24:16" (3/3) ... [2021-10-13 00:24:16,027 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound2.c [2021-10-13 00:24:16,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:24:16,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 00:24:16,112 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:24:16,119 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:24:16,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 00:24:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:24:16,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:16,175 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:16,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:24:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:16,182 INFO L82 PathProgramCache]: Analyzing trace with hash 120120651, now seen corresponding path program 1 times [2021-10-13 00:24:16,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:16,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645628506] [2021-10-13 00:24:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:16,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:16,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:16,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645628506] [2021-10-13 00:24:16,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645628506] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:24:16,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:24:16,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:24:16,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208778945] [2021-10-13 00:24:16,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:24:16,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:24:16,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:24:16,479 INFO L87 Difference]: Start difference. First operand has 22 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:16,495 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-10-13 00:24:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:24:16,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:24:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:16,506 INFO L225 Difference]: With dead ends: 41 [2021-10-13 00:24:16,506 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 00:24:16,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:24:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 00:24:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-13 00:24:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-13 00:24:16,554 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-10-13 00:24:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:16,555 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-13 00:24:16,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-13 00:24:16,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:24:16,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:16,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:16,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:24:16,571 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:24:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-10-13 00:24:16,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:16,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258976386] [2021-10-13 00:24:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:16,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:16,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:16,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322508276] [2021-10-13 00:24:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:16,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:16,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:16,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:16,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:24:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:16,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:24:16,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:16,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:16,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258976386] [2021-10-13 00:24:16,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:16,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322508276] [2021-10-13 00:24:16,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322508276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:24:16,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:24:16,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:24:16,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907071950] [2021-10-13 00:24:16,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:24:16,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:16,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:24:16,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:24:16,856 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:16,950 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-10-13 00:24:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:24:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:24:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:16,955 INFO L225 Difference]: With dead ends: 36 [2021-10-13 00:24:16,955 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 00:24:16,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:24:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 00:24:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-10-13 00:24:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-13 00:24:16,970 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2021-10-13 00:24:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:16,971 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-13 00:24:16,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-13 00:24:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:24:16,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:16,974 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:17,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:17,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:17,197 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:24:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:17,198 INFO L82 PathProgramCache]: Analyzing trace with hash -938089448, now seen corresponding path program 1 times [2021-10-13 00:24:17,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:17,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51433409] [2021-10-13 00:24:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:17,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:17,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:17,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161230777] [2021-10-13 00:24:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:17,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:17,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:17,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:17,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:24:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:17,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:24:17,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:17,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:17,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51433409] [2021-10-13 00:24:17,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:17,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161230777] [2021-10-13 00:24:17,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161230777] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:17,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:17,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:24:17,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511400277] [2021-10-13 00:24:17,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:24:17,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:24:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:24:17,458 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:17,536 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-10-13 00:24:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:24:17,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-10-13 00:24:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:17,538 INFO L225 Difference]: With dead ends: 39 [2021-10-13 00:24:17,538 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 00:24:17,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:24:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 00:24:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2021-10-13 00:24:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.24) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-13 00:24:17,546 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2021-10-13 00:24:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:17,547 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-13 00:24:17,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-13 00:24:17,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:24:17,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:17,550 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:17,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-13 00:24:17,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-13 00:24:17,757 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:24:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash 687671895, now seen corresponding path program 1 times [2021-10-13 00:24:17,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:17,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241871451] [2021-10-13 00:24:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:17,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:17,772 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:17,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450813081] [2021-10-13 00:24:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:17,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:17,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:17,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:17,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:24:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:17,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:24:17,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:17,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:17,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241871451] [2021-10-13 00:24:17,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:17,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450813081] [2021-10-13 00:24:17,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450813081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:17,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:17,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-13 00:24:17,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94061567] [2021-10-13 00:24:17,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:24:17,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:24:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:24:17,940 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.0) 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) [2021-10-13 00:24:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:17,981 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-10-13 00:24:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:24:17,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) 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 [2021-10-13 00:24:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:17,982 INFO L225 Difference]: With dead ends: 34 [2021-10-13 00:24:17,982 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 00:24:17,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:24:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 00:24:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 00:24:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-13 00:24:17,988 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2021-10-13 00:24:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:17,989 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-13 00:24:17,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) 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) [2021-10-13 00:24:17,989 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-13 00:24:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:24:17,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:17,990 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:18,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:18,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:18,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:24:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:18,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1290921348, now seen corresponding path program 2 times [2021-10-13 00:24:18,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:18,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806863407] [2021-10-13 00:24:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:18,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:18,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:18,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610790547] [2021-10-13 00:24:18,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:24:18,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:18,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:18,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:18,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:24:18,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:24:18,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:18,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:24:18,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:18,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:18,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806863407] [2021-10-13 00:24:18,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:18,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610790547] [2021-10-13 00:24:18,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610790547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:18,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:18,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:24:18,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147493050] [2021-10-13 00:24:18,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:24:18,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:18,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:24:18,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:24:18,434 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:18,463 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-10-13 00:24:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:24:18,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 00:24:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:18,465 INFO L225 Difference]: With dead ends: 38 [2021-10-13 00:24:18,465 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 00:24:18,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:24:18,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 00:24:18,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-13 00:24:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-13 00:24:18,476 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2021-10-13 00:24:18,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:18,477 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-13 00:24:18,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-13 00:24:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:24:18,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:18,478 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:18,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:18,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:18,679 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:24:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:18,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1329593552, now seen corresponding path program 1 times [2021-10-13 00:24:18,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:18,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736451839] [2021-10-13 00:24:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:18,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:18,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:18,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047643907] [2021-10-13 00:24:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:18,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:18,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:18,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:18,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:24:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:18,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:24:18,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:19,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:19,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736451839] [2021-10-13 00:24:19,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:19,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047643907] [2021-10-13 00:24:19,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047643907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:19,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:19,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:24:19,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026061582] [2021-10-13 00:24:19,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:24:19,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:24:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:24:19,054 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:19,157 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-10-13 00:24:19,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:24:19,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 00:24:19,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:19,158 INFO L225 Difference]: With dead ends: 28 [2021-10-13 00:24:19,158 INFO L226 Difference]: Without dead ends: 22 [2021-10-13 00:24:19,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:24:19,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-13 00:24:19,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-13 00:24:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-13 00:24:19,162 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 17 [2021-10-13 00:24:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:19,162 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-13 00:24:19,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-13 00:24:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:24:19,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:19,164 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:19,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:19,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:19,364 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:24:19,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:19,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1363812488, now seen corresponding path program 1 times [2021-10-13 00:24:19,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:19,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460956516] [2021-10-13 00:24:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:19,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:19,376 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:19,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617492793] [2021-10-13 00:24:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:19,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:19,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:19,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:19,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:24:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:19,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:24:19,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:19,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:19,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460956516] [2021-10-13 00:24:19,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:19,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617492793] [2021-10-13 00:24:19,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617492793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:19,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:19,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:24:19,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27514642] [2021-10-13 00:24:19,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:24:19,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:19,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:24:19,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:24:19,821 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:19,880 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-13 00:24:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:24:19,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 00:24:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:19,884 INFO L225 Difference]: With dead ends: 22 [2021-10-13 00:24:19,885 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 00:24:19,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:24:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 00:24:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-13 00:24:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-13 00:24:19,902 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2021-10-13 00:24:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:19,908 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-13 00:24:19,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-13 00:24:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:24:19,910 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:19,910 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:19,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:20,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 00:24:20,115 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:24:20,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:20,116 INFO L82 PathProgramCache]: Analyzing trace with hash 658932075, now seen corresponding path program 2 times [2021-10-13 00:24:20,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:20,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685553409] [2021-10-13 00:24:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:20,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:20,128 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:20,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784242934] [2021-10-13 00:24:20,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:24:20,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:20,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:20,138 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:20,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:24:20,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:24:20,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-13 00:24:20,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:20,481 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:20,481 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:24:20,482 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:20,484 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:20,485 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:20,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:20,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:20,692 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:24:20,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:24:20 BoogieIcfgContainer [2021-10-13 00:24:20,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:24:20,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:24:20,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:24:20,728 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:24:20,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:24:16" (3/4) ... [2021-10-13 00:24:20,730 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:24:20,811 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:24:20,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:24:20,816 INFO L168 Benchmark]: Toolchain (without parser) took 5470.56 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 55.6 MB in the beginning and 76.7 MB in the end (delta: -21.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:20,817 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 60.2 MB in the beginning and 60.2 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:24:20,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.22 ms. Allocated memory is still 90.2 MB. Free memory was 55.4 MB in the beginning and 66.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:20,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.42 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 64.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:20,818 INFO L168 Benchmark]: Boogie Preprocessor took 24.76 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 63.9 MB in the end (delta: 795.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:24:20,819 INFO L168 Benchmark]: RCFGBuilder took 295.93 ms. Allocated memory is still 90.2 MB. Free memory was 63.6 MB in the beginning and 54.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:20,819 INFO L168 Benchmark]: TraceAbstraction took 4714.98 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 53.5 MB in the beginning and 79.9 MB in the end (delta: -26.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:20,820 INFO L168 Benchmark]: Witness Printer took 86.28 ms. Allocated memory is still 125.8 MB. Free memory was 78.8 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:20,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory was 60.2 MB in the beginning and 60.2 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.22 ms. Allocated memory is still 90.2 MB. Free memory was 55.4 MB in the beginning and 66.4 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.42 ms. Allocated memory is still 90.2 MB. Free memory was 66.4 MB in the beginning and 64.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.76 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 63.9 MB in the end (delta: 795.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 295.93 ms. Allocated memory is still 90.2 MB. Free memory was 63.6 MB in the beginning and 54.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4714.98 ms. Allocated memory was 90.2 MB in the beginning and 125.8 MB in the end (delta: 35.7 MB). Free memory was 53.5 MB in the beginning and 79.9 MB in the end (delta: -26.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 86.28 ms. Allocated memory is still 125.8 MB. Free memory was 78.8 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) VAL [counter=0] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [counter=2] [L28] EXPR counter++ VAL [counter=3] [L28] COND FALSE !(counter++<2) [L10] COND FALSE !(!(cond)) VAL [counter=3] [L10] COND TRUE !(cond) VAL [counter=3] [L12] reach_error() VAL [counter=3] - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4579.7ms, OverallIterations: 8, TraceHistogramMax: 3, EmptinessCheckTime: 58.8ms, AutomataDifference: 479.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 112 SDtfs, 64 SDslu, 196 SDs, 0 SdLazy, 160 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 200.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 189.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 66.9ms AutomataMinimizationTime, 7 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 62.9ms SsaConstructionTime, 412.9ms SatisfiabilityAnalysisTime, 1176.0ms InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 387 SizeOfPredicates, 20 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 8/27 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! [2021-10-13 00:24:20,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbd8f13d-4b2a-41a7-b70d-245fc9e9c9e1/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...