./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.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_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/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_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/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_db208b7c-1b5a-4ded-9494-b72b605522f5/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 d7fb0cb3aecdc56f56ac37bccb90dc5beea8d3d2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:11:18,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:11:18,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:11:18,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:11:18,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:11:18,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:11:18,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:11:18,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:11:18,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:11:18,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:11:18,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:11:18,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:11:18,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:11:18,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:11:18,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:11:18,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:11:18,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:11:18,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:11:18,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:11:18,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:11:18,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:11:18,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:11:18,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:11:18,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:11:18,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:11:18,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:11:18,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:11:18,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:11:18,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:11:18,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:11:18,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:11:18,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:11:18,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:11:18,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:11:18,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:11:18,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:11:18,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:11:18,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:11:18,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:11:18,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:11:18,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:11:18,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:11:18,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:11:18,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:11:18,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:11:18,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:11:18,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:11:18,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:11:18,540 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:11:18,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:11:18,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:11:18,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:11:18,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:11:18,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:11:18,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:11:18,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:11:18,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:11:18,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:11:18,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:11:18,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:11:18,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:11:18,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:11:18,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:11:18,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:11:18,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:11:18,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:11:18,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:11:18,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:11:18,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:11:18,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:11:18,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:11:18,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:11:18,552 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_db208b7c-1b5a-4ded-9494-b72b605522f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7fb0cb3aecdc56f56ac37bccb90dc5beea8d3d2 [2021-10-13 00:11:18,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:11:18,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:11:18,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:11:18,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:11:18,936 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:11:18,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2021-10-13 00:11:19,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/data/4c0e5c652/d27a6a3b1aec4986ace0c56ae4b8bd20/FLAG12e812d6a [2021-10-13 00:11:19,582 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:11:19,583 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2021-10-13 00:11:19,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/data/4c0e5c652/d27a6a3b1aec4986ace0c56ae4b8bd20/FLAG12e812d6a [2021-10-13 00:11:19,893 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/data/4c0e5c652/d27a6a3b1aec4986ace0c56ae4b8bd20 [2021-10-13 00:11:19,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:11:19,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:11:19,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:11:19,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:11:19,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:11:19,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:11:19" (1/1) ... [2021-10-13 00:11:19,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679bd903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:19, skipping insertion in model container [2021-10-13 00:11:19,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:11:19" (1/1) ... [2021-10-13 00:11:19,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:11:19,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:11:20,166 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_db208b7c-1b5a-4ded-9494-b72b605522f5/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2021-10-13 00:11:20,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:11:20,212 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:11:20,242 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_db208b7c-1b5a-4ded-9494-b72b605522f5/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2021-10-13 00:11:20,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:11:20,295 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:11:20,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20 WrapperNode [2021-10-13 00:11:20,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:11:20,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:11:20,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:11:20,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:11:20,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:11:20,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:11:20,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:11:20,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:11:20,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:11:20,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:11:20,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:11:20,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:11:20,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (1/1) ... [2021-10-13 00:11:20,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:11:20,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:20,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:11:20,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:11:20,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:11:20,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:11:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:11:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:11:20,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:11:20,943 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 00:11:20,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:11:20 BoogieIcfgContainer [2021-10-13 00:11:20,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:11:20,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:11:20,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:11:20,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:11:20,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:11:19" (1/3) ... [2021-10-13 00:11:20,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6552db16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:11:20, skipping insertion in model container [2021-10-13 00:11:20,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:11:20" (2/3) ... [2021-10-13 00:11:20,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6552db16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:11:20, skipping insertion in model container [2021-10-13 00:11:20,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:11:20" (3/3) ... [2021-10-13 00:11:20,957 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2021-10-13 00:11:20,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:11:20,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 00:11:21,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:11:21,036 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 00:11:21,046 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 00:11:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 38 states have internal predecessors, (53), 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 00:11:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:11:21,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:21,105 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:21,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:21,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:21,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-13 00:11:21,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:21,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311270020] [2021-10-13 00:11:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:21,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:21,360 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 00:11:21,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:21,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311270020] [2021-10-13 00:11:21,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311270020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:21,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:21,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:11:21,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015790898] [2021-10-13 00:11:21,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:11:21,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:11:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:11:21,395 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 38 states have internal predecessors, (53), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 00:11:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:21,419 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-10-13 00:11:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:11:21,421 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-13 00:11:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:21,432 INFO L225 Difference]: With dead ends: 75 [2021-10-13 00:11:21,432 INFO L226 Difference]: Without dead ends: 35 [2021-10-13 00:11:21,436 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 00:11:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-13 00:11:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-13 00:11:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-13 00:11:21,480 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-10-13 00:11:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:21,480 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-13 00:11:21,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 00:11:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-13 00:11:21,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:11:21,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:21,482 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:21,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:11:21,483 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:21,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:21,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-13 00:11:21,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:21,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897093144] [2021-10-13 00:11:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:21,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:21,614 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 00:11:21,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:21,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897093144] [2021-10-13 00:11:21,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897093144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:21,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:21,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:11:21,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532481533] [2021-10-13 00:11:21,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:11:21,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:21,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:11:21,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:11:21,622 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 00:11:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:21,713 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-10-13 00:11:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:11:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-13 00:11:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:21,716 INFO L225 Difference]: With dead ends: 54 [2021-10-13 00:11:21,716 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 00:11:21,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:11:21,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 00:11:21,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-10-13 00:11:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 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 00:11:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-10-13 00:11:21,727 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2021-10-13 00:11:21,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:21,728 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-10-13 00:11:21,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 00:11:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-10-13 00:11:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:11:21,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:21,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:21,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:11:21,730 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:21,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:21,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-13 00:11:21,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:21,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527694595] [2021-10-13 00:11:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:21,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:21,811 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 00:11:21,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:21,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527694595] [2021-10-13 00:11:21,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527694595] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:21,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:21,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:11:21,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041815149] [2021-10-13 00:11:21,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:11:21,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:11:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:11:21,816 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 00:11:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:21,937 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-10-13 00:11:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:11:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-10-13 00:11:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:21,941 INFO L225 Difference]: With dead ends: 52 [2021-10-13 00:11:21,942 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 00:11:21,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:11:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 00:11:21,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2021-10-13 00:11:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-10-13 00:11:21,953 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-10-13 00:11:21,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:21,953 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-13 00:11:21,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 00:11:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-10-13 00:11:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:11:21,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:21,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:21,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:11:21,956 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:21,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-13 00:11:21,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:21,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568617603] [2021-10-13 00:11:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:21,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:21,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:21,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623761835] [2021-10-13 00:11:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:21,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:21,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:22,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:11:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:22,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:11:22,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:22,297 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 00:11:22,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:22,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568617603] [2021-10-13 00:11:22,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:22,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623761835] [2021-10-13 00:11:22,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623761835] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:22,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:22,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:11:22,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549419182] [2021-10-13 00:11:22,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:11:22,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:22,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:11:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:11:22,302 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:22,404 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-10-13 00:11:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:11:22,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:11:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:22,406 INFO L225 Difference]: With dead ends: 72 [2021-10-13 00:11:22,406 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 00:11:22,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:11:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 00:11:22,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-13 00:11:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.225) internal successors, (49), 44 states have internal predecessors, (49), 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 00:11:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-10-13 00:11:22,419 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-10-13 00:11:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:22,419 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-10-13 00:11:22,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-10-13 00:11:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:11:22,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:22,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:22,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:22,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:22,650 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:22,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2021-10-13 00:11:22,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:22,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969189061] [2021-10-13 00:11:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:22,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:22,683 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:22,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119845710] [2021-10-13 00:11:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:22,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:22,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:22,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:22,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:11:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:22,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:11:22,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:23,033 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 00:11:23,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:23,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969189061] [2021-10-13 00:11:23,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:23,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119845710] [2021-10-13 00:11:23,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119845710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:23,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:23,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:11:23,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338828694] [2021-10-13 00:11:23,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:11:23,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:11:23,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:11:23,045 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:23,144 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-10-13 00:11:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:11:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:11:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:23,149 INFO L225 Difference]: With dead ends: 63 [2021-10-13 00:11:23,149 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 00:11:23,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:11:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 00:11:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-13 00:11:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 states have internal predecessors, (51), 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 00:11:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-10-13 00:11:23,175 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-10-13 00:11:23,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:23,176 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-10-13 00:11:23,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-10-13 00:11:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:11:23,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:23,185 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:23,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:23,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:23,414 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:23,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-10-13 00:11:23,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:23,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100931593] [2021-10-13 00:11:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:23,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:23,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:23,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570458841] [2021-10-13 00:11:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:23,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:23,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:23,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:11:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:23,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:11:23,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:23,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:23,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100931593] [2021-10-13 00:11:23,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:23,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570458841] [2021-10-13 00:11:23,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570458841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:23,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:11:23,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:11:23,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911011312] [2021-10-13 00:11:23,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:11:23,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:23,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:11:23,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:11:23,841 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:24,051 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2021-10-13 00:11:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:11:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:11:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:24,056 INFO L225 Difference]: With dead ends: 108 [2021-10-13 00:11:24,057 INFO L226 Difference]: Without dead ends: 71 [2021-10-13 00:11:24,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:11:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-13 00:11:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2021-10-13 00:11:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 65 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-10-13 00:11:24,086 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 18 [2021-10-13 00:11:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:24,087 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-10-13 00:11:24,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-10-13 00:11:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:11:24,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:24,090 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:24,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:24,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:11:24,318 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:24,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:24,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-10-13 00:11:24,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:24,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010805456] [2021-10-13 00:11:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:24,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:24,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:24,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138418274] [2021-10-13 00:11:24,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:11:24,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:24,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:24,344 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:24,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:11:24,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:11:24,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:24,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:11:24,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:24,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:24,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010805456] [2021-10-13 00:11:24,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:24,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138418274] [2021-10-13 00:11:24,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138418274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:24,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:11:24,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:11:24,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077857470] [2021-10-13 00:11:24,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:11:24,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:11:24,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:11:24,894 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 00:11:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:25,128 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2021-10-13 00:11:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:11:25,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2021-10-13 00:11:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:25,131 INFO L225 Difference]: With dead ends: 142 [2021-10-13 00:11:25,132 INFO L226 Difference]: Without dead ends: 105 [2021-10-13 00:11:25,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:11:25,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-13 00:11:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2021-10-13 00:11:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.2) internal successors, (96), 84 states have internal predecessors, (96), 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 00:11:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2021-10-13 00:11:25,145 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 25 [2021-10-13 00:11:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:25,146 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2021-10-13 00:11:25,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 00:11:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2021-10-13 00:11:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:11:25,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:25,148 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:25,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:25,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:25,362 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:25,362 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2021-10-13 00:11:25,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:25,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198314180] [2021-10-13 00:11:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:25,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:25,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:25,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48603486] [2021-10-13 00:11:25,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:25,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:25,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:25,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:25,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:11:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:25,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:11:25,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:26,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:26,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198314180] [2021-10-13 00:11:26,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:26,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48603486] [2021-10-13 00:11:26,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48603486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:26,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:11:26,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:11:26,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487934010] [2021-10-13 00:11:26,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:11:26,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:11:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:11:26,202 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:26,380 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2021-10-13 00:11:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:11:26,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 00:11:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:26,382 INFO L225 Difference]: With dead ends: 102 [2021-10-13 00:11:26,382 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 00:11:26,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:11:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 00:11:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2021-10-13 00:11:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 92 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2021-10-13 00:11:26,395 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 27 [2021-10-13 00:11:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:26,396 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2021-10-13 00:11:26,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2021-10-13 00:11:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:11:26,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:26,398 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:26,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:26,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:26,614 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:26,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:26,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2021-10-13 00:11:26,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:26,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770838772] [2021-10-13 00:11:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:26,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:26,652 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:26,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263100669] [2021-10-13 00:11:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:26,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:26,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:26,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:26,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:11:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:26,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 00:11:26,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:27,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:27,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770838772] [2021-10-13 00:11:27,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:27,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263100669] [2021-10-13 00:11:27,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263100669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:27,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:11:27,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:11:27,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255691922] [2021-10-13 00:11:27,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:11:27,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:11:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:11:27,487 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 00:11:27,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:27,650 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2021-10-13 00:11:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:11:27,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 00:11:27,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:27,652 INFO L225 Difference]: With dead ends: 100 [2021-10-13 00:11:27,652 INFO L226 Difference]: Without dead ends: 85 [2021-10-13 00:11:27,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:11:27,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-13 00:11:27,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-13 00:11:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.1875) internal successors, (95), 84 states have internal predecessors, (95), 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 00:11:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-10-13 00:11:27,664 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 32 [2021-10-13 00:11:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:27,664 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-10-13 00:11:27,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 00:11:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-10-13 00:11:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:11:27,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:27,666 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:27,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:27,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-13 00:11:27,882 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 3 times [2021-10-13 00:11:27,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:27,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491070995] [2021-10-13 00:11:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:27,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:27,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:27,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749174100] [2021-10-13 00:11:27,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:11:27,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:27,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:27,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:27,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:11:28,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:11:28,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:28,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:11:28,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 00:11:28,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:28,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491070995] [2021-10-13 00:11:28,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:28,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749174100] [2021-10-13 00:11:28,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749174100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:28,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:11:28,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:11:28,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705439931] [2021-10-13 00:11:28,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:11:28,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:28,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:11:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:11:28,505 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 00:11:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:28,711 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2021-10-13 00:11:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:11:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 00:11:28,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:28,713 INFO L225 Difference]: With dead ends: 96 [2021-10-13 00:11:28,714 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 00:11:28,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:11:28,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 00:11:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-13 00:11:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 83 states have (on average 1.144578313253012) internal successors, (95), 85 states have internal predecessors, (95), 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 00:11:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-10-13 00:11:28,727 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 32 [2021-10-13 00:11:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:28,727 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-10-13 00:11:28,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 00:11:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-10-13 00:11:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:11:28,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:28,730 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:28,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:28,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:11:28,948 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:28,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1996519097, now seen corresponding path program 2 times [2021-10-13 00:11:28,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:28,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665038245] [2021-10-13 00:11:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:28,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:28,962 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:28,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030881073] [2021-10-13 00:11:28,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:11:28,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:28,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:28,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:28,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:11:29,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:11:29,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:29,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 00:11:29,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:29,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:29,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665038245] [2021-10-13 00:11:29,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:29,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030881073] [2021-10-13 00:11:29,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030881073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:29,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:11:29,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:11:29,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030646156] [2021-10-13 00:11:29,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:11:29,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:11:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:11:29,923 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:30,198 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2021-10-13 00:11:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:11:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-13 00:11:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:30,200 INFO L225 Difference]: With dead ends: 99 [2021-10-13 00:11:30,200 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 00:11:30,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:11:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 00:11:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2021-10-13 00:11:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 87 states have internal predecessors, (96), 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 00:11:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-10-13 00:11:30,213 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 34 [2021-10-13 00:11:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:30,214 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-10-13 00:11:30,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-10-13 00:11:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 00:11:30,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:30,223 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:30,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:30,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:30,439 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1415019748, now seen corresponding path program 1 times [2021-10-13 00:11:30,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:30,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188677222] [2021-10-13 00:11:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:30,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:30,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:30,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586240615] [2021-10-13 00:11:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:30,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:30,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:30,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:30,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:11:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:30,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:11:30,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 00:11:31,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:31,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188677222] [2021-10-13 00:11:31,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:31,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586240615] [2021-10-13 00:11:31,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586240615] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:11:31,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:11:31,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:11:31,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424681521] [2021-10-13 00:11:31,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:11:31,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:31,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:11:31,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:11:31,292 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:31,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:31,412 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2021-10-13 00:11:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:11:31,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-13 00:11:31,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:31,414 INFO L225 Difference]: With dead ends: 143 [2021-10-13 00:11:31,414 INFO L226 Difference]: Without dead ends: 106 [2021-10-13 00:11:31,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:11:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-13 00:11:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2021-10-13 00:11:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 74 states have internal predecessors, (80), 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 00:11:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-13 00:11:31,428 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 40 [2021-10-13 00:11:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:31,428 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-13 00:11:31,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:31,429 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-13 00:11:31,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 00:11:31,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:31,434 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:31,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:31,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 00:11:31,635 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:31,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 3 times [2021-10-13 00:11:31,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:31,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776721380] [2021-10-13 00:11:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:31,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:31,654 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:31,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855599788] [2021-10-13 00:11:31,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:11:31,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:31,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:31,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:31,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:11:32,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:11:32,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:11:32,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 00:11:32,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:32,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:32,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776721380] [2021-10-13 00:11:32,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:32,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855599788] [2021-10-13 00:11:32,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855599788] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:32,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:11:32,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:11:32,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569795706] [2021-10-13 00:11:32,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:11:32,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:11:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:11:32,663 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 00:11:32,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:32,999 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2021-10-13 00:11:33,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:11:33,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 40 [2021-10-13 00:11:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:33,001 INFO L225 Difference]: With dead ends: 82 [2021-10-13 00:11:33,001 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 00:11:33,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 305.3ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:11:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 00:11:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-13 00:11:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0) internal successors, (45), 45 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2021-10-13 00:11:33,013 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 40 [2021-10-13 00:11:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:33,014 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2021-10-13 00:11:33,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 00:11:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2021-10-13 00:11:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:11:33,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:11:33,015 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:11:33,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:33,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:11:33,234 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:11:33,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:11:33,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1953331806, now seen corresponding path program 1 times [2021-10-13 00:11:33,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:11:33,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81507343] [2021-10-13 00:11:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:33,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:11:33,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:11:33,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509186773] [2021-10-13 00:11:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:11:33,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:33,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:11:33,255 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:11:33,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:11:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:11:33,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 00:11:33,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:11:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:11:35,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:11:35,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81507343] [2021-10-13 00:11:35,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:11:35,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509186773] [2021-10-13 00:11:35,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509186773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:11:35,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:11:35,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:11:35,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125218948] [2021-10-13 00:11:35,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:11:35,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:11:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:11:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:11:35,245 INFO L87 Difference]: Start difference. First operand 46 states and 45 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:11:35,689 INFO L93 Difference]: Finished difference Result 46 states and 45 transitions. [2021-10-13 00:11:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:11:35,691 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-13 00:11:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:11:35,692 INFO L225 Difference]: With dead ends: 46 [2021-10-13 00:11:35,692 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:11:35,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 409.1ms TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:11:35,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:11:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:11:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:11:35,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-10-13 00:11:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:11:35,699 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:11:35,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:11:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:11:35,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:11:35,703 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:11:35,703 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:11:35,704 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:11:35,704 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:11:35,705 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:11:35,706 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:11:35,706 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:11:35,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:11:35,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:11:35,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:11:35,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:35,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:36,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:36,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:36,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:36,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:36,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:36,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:36,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:11:37,586 INFO L860 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-10-13 00:11:37,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:11:37,587 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-10-13 00:11:37,587 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-10-13 00:11:37,587 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:11:37,587 INFO L857 garLoopResultBuilder]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2021-10-13 00:11:37,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:11:37,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:11:37,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:11:37,588 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 00:11:37,588 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:11:37,588 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:11:37,588 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:11:37,588 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:11:37,588 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse6 (* 2 ULTIMATE.start_main_~B~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~A~0 2)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (<= 0 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 .cse6)) (and .cse0 (= ULTIMATE.start_main_~p~0 4) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 4) .cse3 .cse5 (= (* 2 (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0)) ULTIMATE.start_main_~d~0) (<= .cse6 ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-10-13 00:11:37,588 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:11:37,589 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse6 (* 2 ULTIMATE.start_main_~B~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~A~0 2)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (<= 0 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 .cse6)) (and .cse0 (= ULTIMATE.start_main_~p~0 4) .cse1 .cse2 (= ULTIMATE.start_main_~d~0 4) .cse3 .cse5 (= (* 2 (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0)) ULTIMATE.start_main_~d~0) (<= .cse6 ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-10-13 00:11:37,589 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:11:37,589 INFO L853 garLoopResultBuilder]: At program point L15-8(line 38) the Hoare annotation is: (let ((.cse6 (* 2 ULTIMATE.start_main_~B~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~A~0 2)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (<= 0 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 2) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 .cse6)) (and .cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse1 (= ULTIMATE.start_main_~B~0 1) .cse2 (= ULTIMATE.start_main_~d~0 4) .cse3 .cse5 (<= .cse6 ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-10-13 00:11:37,589 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:11:37,589 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse8 (* 2 ULTIMATE.start_main_~B~0))) (let ((.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~A~0 2)) (.cse1 (= ULTIMATE.start_main_~d~0 2)) (.cse10 (<= 0 ULTIMATE.start_main_~r~0)) (.cse11 (<= .cse8 ULTIMATE.start_main_~A~0)) (.cse4 (= ULTIMATE.start_main_~p~0 2)) (.cse5 (= ULTIMATE.start_main_~d~0 .cse8)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse13 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) (.cse9 (= ULTIMATE.start_main_~p~0 1)) (.cse14 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse12 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 (= ULTIMATE.start_main_~p~0 4) .cse0 .cse7 (= ULTIMATE.start_main_~d~0 4) .cse2 .cse3 (= (* 2 (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0)) ULTIMATE.start_main_~d~0) (<= .cse8 ULTIMATE.start_main_~r~0)) (and .cse6 (= ULTIMATE.start_main_~q~0 2) .cse7 .cse9 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse10 .cse11 .cse12 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (and .cse6 .cse0 .cse7 .cse1 (<= .cse13 2) .cse14 .cse10 .cse11 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~B~0 1) .cse9 .cse2 .cse3 .cse12) (and (= ULTIMATE.start_main_~A~0 .cse13) .cse9 .cse14 (= ULTIMATE.start_main_~d~0 1) .cse12 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))))) [2021-10-13 00:11:37,590 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:11:37,590 INFO L853 garLoopResultBuilder]: At program point L15-14(line 48) the Hoare annotation is: (let ((.cse14 (* 2 ULTIMATE.start_main_~B~0))) (let ((.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~A~0 2)) (.cse1 (= ULTIMATE.start_main_~d~0 2)) (.cse15 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) (.cse9 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse16 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse10 (<= 0 ULTIMATE.start_main_~r~0)) (.cse11 (<= .cse14 ULTIMATE.start_main_~A~0)) (.cse4 (= ULTIMATE.start_main_~p~0 2)) (.cse5 (= ULTIMATE.start_main_~d~0 .cse14)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse13 (= ULTIMATE.start_main_~B~0 1)) (.cse8 (= ULTIMATE.start_main_~p~0 1)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse12 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 (= ULTIMATE.start_main_~q~0 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0)) (and .cse6 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse7 .cse13 .cse9 (= ULTIMATE.start_main_~d~0 4) .cse2 .cse3 (<= .cse14 ULTIMATE.start_main_~r~0)) (and (= ULTIMATE.start_main_~A~0 .cse15) .cse0 .cse8 .cse16 (= ULTIMATE.start_main_~d~0 1) .cse12) (and .cse6 .cse7 .cse1 (<= .cse15 2) .cse9 .cse16 .cse10 .cse11 .cse4 .cse5) (and .cse0 .cse13 .cse8 .cse2 .cse3 .cse12)))) [2021-10-13 00:11:37,590 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:11:37,591 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:11:37,591 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-13 00:11:37,591 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:11:37,591 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-13 00:11:37,591 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:11:37,592 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:11:37,592 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:11:37,592 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:11:37,592 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:11:37,592 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:11:37,593 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:11:37,593 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:11:37,593 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:11:37,593 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse4 (<= 0 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~A~0 2)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0)) (.cse6 (* 2 ULTIMATE.start_main_~B~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 2) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 .cse6)) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (and .cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse1 (= ULTIMATE.start_main_~B~0 1) .cse2 (= ULTIMATE.start_main_~d~0 4) .cse3 .cse5 (<= .cse6 ULTIMATE.start_main_~r~0)))) [2021-10-13 00:11:37,594 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:11:37,599 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:11:37,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:11:37 BoogieIcfgContainer [2021-10-13 00:11:37,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:11:37,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:11:37,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:11:37,632 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:11:37,632 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:11:20" (3/4) ... [2021-10-13 00:11:37,636 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:11:37,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-13 00:11:37,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:11:37,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:11:37,651 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:11:37,725 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:11:37,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:11:37,728 INFO L168 Benchmark]: Toolchain (without parser) took 17827.97 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 87.6 MB in the beginning and 155.0 MB in the end (delta: -67.3 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:37,728 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 104.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:11:37,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.98 ms. Allocated memory is still 125.8 MB. Free memory was 87.4 MB in the beginning and 100.7 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:37,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.70 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 99.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:37,730 INFO L168 Benchmark]: Boogie Preprocessor took 60.63 ms. Allocated memory is still 125.8 MB. Free memory was 99.4 MB in the beginning and 97.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:37,731 INFO L168 Benchmark]: RCFGBuilder took 513.62 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 86.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:37,731 INFO L168 Benchmark]: TraceAbstraction took 16682.93 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 86.8 MB in the beginning and 158.1 MB in the end (delta: -71.4 MB). Peak memory consumption was 102.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:37,732 INFO L168 Benchmark]: Witness Printer took 94.44 ms. Allocated memory is still 195.0 MB. Free memory was 158.1 MB in the beginning and 155.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:11:37,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 125.8 MB. Free memory is still 104.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.98 ms. Allocated memory is still 125.8 MB. Free memory was 87.4 MB in the beginning and 100.7 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.70 ms. Allocated memory is still 125.8 MB. Free memory was 100.7 MB in the beginning and 99.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.63 ms. Allocated memory is still 125.8 MB. Free memory was 99.4 MB in the beginning and 97.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 513.62 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 86.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16682.93 ms. Allocated memory was 125.8 MB in the beginning and 195.0 MB in the end (delta: 69.2 MB). Free memory was 86.8 MB in the beginning and 158.1 MB in the end (delta: -71.4 MB). Peak memory consumption was 102.8 MB. Max. memory is 16.1 GB. * Witness Printer took 94.44 ms. Allocated memory is still 195.0 MB. Free memory was 158.1 MB in the beginning and 155.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 16574.4ms, OverallIterations: 14, TraceHistogramMax: 4, EmptinessCheckTime: 38.8ms, AutomataDifference: 2721.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1672.3ms, InitialAbstractionConstructionTime: 35.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 338 SDtfs, 444 SDslu, 634 SDs, 0 SdLazy, 1311 SolverSat, 199 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1225.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1369.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=8, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 189.6ms AutomataMinimizationTime, 14 MinimizatonAttempts, 121 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 37 NumberOfFragments, 718 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1421 FormulaSimplificationTreeSizeReduction, 174.9ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 706 FormulaSimplificationTreeSizeReductionInter, 1486.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 116.0ms SsaConstructionTime, 412.4ms SatisfiabilityAnalysisTime, 6260.3ms InterpolantComputationTime, 341 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 3525 SizeOfPredicates, 62 NumberOfNonLiveVariables, 1255 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 71/207 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((1 <= cond && d == 2) && A == r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && p == 4) && 1 <= cond) && A <= 2) && d == 4) && A == r) && q == 0) && 2 * (p * -1 / -2 * B) == d) && 2 * B <= r)) || ((((((((cond == 1 && q == 2) && A <= 2) && p == 1) && 1 == cond) && 0 <= r) && 2 * B <= A) && B == d) && r < d)) || (((((((((cond == 1 && 1 <= cond) && A <= 2) && d == 2) && d + r <= 2) && q == p) && 0 <= r) && 2 * B <= A) && p == 2) && d == 2 * B)) || (((((1 <= cond && B == 1) && p == 1) && A == r) && q == 0) && B == d)) || (((((A == d + r && p == 1) && q == p) && d == 1) && B == d) && !(0 == cond)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && p == 1) && B == d) && !(0 == cond) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((((1 <= cond && d == 2) && A == r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && q == 2) && A <= 2) && p == 1) && 1 == cond) && 0 <= r) && 2 * B <= A) && B == d) && r < d)) || ((((((((cond == 1 && d == p * B) && A <= 2) && B == 1) && 1 == cond) && d == 4) && A == r) && q == 0) && 2 * B <= r)) || (((((A == d + r && 1 <= cond) && p == 1) && q == p) && d == 1) && B == d)) || (((((((((cond == 1 && A <= 2) && d == 2) && d + r <= 2) && 1 == cond) && q == p) && 0 <= r) && 2 * B <= A) && p == 2) && d == 2 * B)) || (((((1 <= cond && B == 1) && p == 1) && A == r) && q == 0) && B == d) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && A <= 2) && d == 2) && 1 == cond) && A == r) && 0 <= r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && d == p * B) && A <= 2) && B == 1) && 1 == cond) && d == 4) && A == r) && q == 0) && 2 * B <= r)) || ((((((((cond == 1 && A <= 2) && p == 1) && 1 == cond) && A == r) && 0 <= r) && q == 0) && d == 1) && B == d) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 <= cond) && A <= 2) && d == 2) && A == r) && 0 <= r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && p == 4) && 1 <= cond) && A <= 2) && d == 4) && A == r) && q == 0) && 2 * (p * -1 / -2 * B) == d) && 2 * B <= r)) || ((((((((cond == 1 && 1 <= cond) && A <= 2) && p == 1) && A == r) && 0 <= r) && q == 0) && d == 1) && B == d) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && A <= 2) && d == 2) && 1 == cond) && A == r) && 0 <= r) && q == 0) && p == 2) && d == 2 * B) || (((((((cond == 1 && A <= 2) && p == 1) && A == r) && 0 <= r) && q == 0) && d == 1) && B == d)) || ((((((((cond == 1 && d == p * B) && A <= 2) && B == 1) && 1 == cond) && d == 4) && A == r) && q == 0) && 2 * B <= r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 <= cond) && A <= 2) && d == 2) && A == r) && 0 <= r) && q == 0) && p == 2) && d == 2 * B) || ((((((((cond == 1 && p == 4) && 1 <= cond) && A <= 2) && d == 4) && A == r) && q == 0) && 2 * (p * -1 / -2 * B) == d) && 2 * B <= r)) || ((((((((cond == 1 && 1 <= cond) && A <= 2) && p == 1) && A == r) && 0 <= r) && q == 0) && d == 1) && B == d) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:11:37,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db208b7c-1b5a-4ded-9494-b72b605522f5/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...