./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.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_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/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_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/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_bf8c0ddc-209e-47b9-be07-1d1d752da159/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 67e777827185de6182fbe20e554a91174465caae .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:13:52,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:13:52,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:13:52,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:13:52,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:13:52,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:13:52,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:13:52,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:13:52,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:13:52,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:13:52,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:13:52,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:13:52,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:13:52,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:13:52,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:13:52,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:13:52,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:13:52,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:13:52,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:13:52,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:13:52,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:13:52,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:13:52,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:13:52,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:13:52,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:13:52,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:13:52,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:13:52,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:13:52,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:13:52,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:13:52,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:13:52,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:13:52,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:13:52,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:13:52,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:13:52,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:13:52,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:13:52,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:13:52,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:13:52,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:13:52,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:13:52,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:13:52,565 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:13:52,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:13:52,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:13:52,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:13:52,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:13:52,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:13:52,568 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:13:52,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:13:52,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:13:52,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:13:52,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:13:52,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:13:52,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:13:52,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:13:52,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:13:52,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:13:52,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:13:52,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:13:52,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:13:52,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:13:52,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:13:52,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:13:52,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:13:52,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:13:52,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:13:52,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:13:52,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:13:52,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:13:52,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:13:52,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:13:52,575 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_bf8c0ddc-209e-47b9-be07-1d1d752da159/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e777827185de6182fbe20e554a91174465caae [2021-10-13 00:13:52,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:13:52,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:13:52,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:13:52,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:13:52,881 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:13:52,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c [2021-10-13 00:13:52,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/data/ff4f710a5/b8ee29000b2044b2b0548ff34a6dc9b3/FLAGf92fd9d2d [2021-10-13 00:13:53,410 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:13:53,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c [2021-10-13 00:13:53,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/data/ff4f710a5/b8ee29000b2044b2b0548ff34a6dc9b3/FLAGf92fd9d2d [2021-10-13 00:13:53,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/data/ff4f710a5/b8ee29000b2044b2b0548ff34a6dc9b3 [2021-10-13 00:13:53,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:13:53,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:13:53,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:13:53,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:13:53,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:13:53,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:13:53" (1/1) ... [2021-10-13 00:13:53,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb5a808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:53, skipping insertion in model container [2021-10-13 00:13:53,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:13:53" (1/1) ... [2021-10-13 00:13:53,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:13:53,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:13:54,038 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_bf8c0ddc-209e-47b9-be07-1d1d752da159/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c[588,601] [2021-10-13 00:13:54,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:13:54,100 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:13:54,118 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_bf8c0ddc-209e-47b9-be07-1d1d752da159/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c[588,601] [2021-10-13 00:13:54,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:13:54,169 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:13:54,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54 WrapperNode [2021-10-13 00:13:54,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:13:54,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:13:54,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:13:54,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:13:54,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:13:54,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:13:54,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:13:54,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:13:54,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:13:54,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:13:54,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:13:54,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:13:54,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (1/1) ... [2021-10-13 00:13:54,319 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:13:54,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:54,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:13:54,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:13:54,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:13:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:13:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:13:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:13:54,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:13:54,776 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-13 00:13:54,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:13:54 BoogieIcfgContainer [2021-10-13 00:13:54,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:13:54,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:13:54,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:13:54,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:13:54,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:13:53" (1/3) ... [2021-10-13 00:13:54,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c718c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:13:54, skipping insertion in model container [2021-10-13 00:13:54,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:13:54" (2/3) ... [2021-10-13 00:13:54,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c718c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:13:54, skipping insertion in model container [2021-10-13 00:13:54,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:13:54" (3/3) ... [2021-10-13 00:13:54,787 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound50.c [2021-10-13 00:13:54,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:13:54,799 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-13 00:13:54,896 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:13:54,905 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 00:13:54,906 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-13 00:13:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 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 00:13:54,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:13:54,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:54,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:13:54,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:54,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:54,951 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 00:13:54,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:54,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184436010] [2021-10-13 00:13:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:54,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:55,338 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 00:13:55,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:55,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184436010] [2021-10-13 00:13:55,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184436010] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:13:55,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:13:55,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:13:55,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556813954] [2021-10-13 00:13:55,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:13:55,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:55,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:13:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:13:55,366 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 00:13:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:55,544 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-10-13 00:13:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:13:55,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-13 00:13:55,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:55,556 INFO L225 Difference]: With dead ends: 101 [2021-10-13 00:13:55,557 INFO L226 Difference]: Without dead ends: 47 [2021-10-13 00:13:55,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:13:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-13 00:13:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-10-13 00:13:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 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 00:13:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-10-13 00:13:55,618 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-10-13 00:13:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:55,620 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-13 00:13:55,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 00:13:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-10-13 00:13:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:13:55,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:55,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:55,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:13:55,624 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:55,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-13 00:13:55,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:55,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290078555] [2021-10-13 00:13:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:55,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:55,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:13:55,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653302051] [2021-10-13 00:13:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:55,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:55,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:55,664 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:55,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:13:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:55,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:13:55,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:55,830 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 00:13:55,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:55,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290078555] [2021-10-13 00:13:55,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:13:55,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653302051] [2021-10-13 00:13:55,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653302051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:13:55,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:13:55,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:13:55,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940496907] [2021-10-13 00:13:55,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:13:55,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:13:55,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:13:55,836 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:55,936 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-10-13 00:13:55,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:13:55,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:13:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:55,938 INFO L225 Difference]: With dead ends: 86 [2021-10-13 00:13:55,939 INFO L226 Difference]: Without dead ends: 84 [2021-10-13 00:13:55,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:13:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-13 00:13:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-10-13 00:13:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 48 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 00:13:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-10-13 00:13:55,950 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2021-10-13 00:13:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:55,950 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-10-13 00:13:55,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-10-13 00:13:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:13:55,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:55,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:55,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:56,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:56,179 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:56,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-10-13 00:13:56,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:56,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821915734] [2021-10-13 00:13:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:56,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:56,194 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:13:56,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627596111] [2021-10-13 00:13:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:56,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:56,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:56,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:56,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:13:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:56,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:13:56,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:56,311 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 00:13:56,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:56,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821915734] [2021-10-13 00:13:56,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:13:56,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627596111] [2021-10-13 00:13:56,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627596111] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:13:56,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:13:56,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:13:56,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113591718] [2021-10-13 00:13:56,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:13:56,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:56,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:13:56,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:13:56,316 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 00:13:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:56,332 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-10-13 00:13:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:13:56,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 00:13:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:56,334 INFO L225 Difference]: With dead ends: 71 [2021-10-13 00:13:56,334 INFO L226 Difference]: Without dead ends: 49 [2021-10-13 00:13:56,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:13:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-13 00:13:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-13 00:13:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 48 states have internal predecessors, (50), 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 00:13:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-10-13 00:13:56,344 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2021-10-13 00:13:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:56,345 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-10-13 00:13:56,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 00:13:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-10-13 00:13:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:13:56,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:56,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:56,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:56,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:56,567 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:56,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:56,568 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-13 00:13:56,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:56,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385451393] [2021-10-13 00:13:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:56,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:56,582 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:13:56,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412388507] [2021-10-13 00:13:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:56,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:56,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:56,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:56,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:13:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:56,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:13:56,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:56,762 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 00:13:56,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:56,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385451393] [2021-10-13 00:13:56,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:13:56,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412388507] [2021-10-13 00:13:56,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412388507] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:13:56,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:13:56,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:13:56,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117045077] [2021-10-13 00:13:56,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:13:56,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:56,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:13:56,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:13:56,767 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:56,860 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-10-13 00:13:56,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:13:56,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 00:13:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:56,862 INFO L225 Difference]: With dead ends: 84 [2021-10-13 00:13:56,862 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 00:13:56,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:13:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 00:13:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-13 00:13:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 59 states have internal predecessors, (64), 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 00:13:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-10-13 00:13:56,873 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2021-10-13 00:13:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:56,873 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-10-13 00:13:56,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-10-13 00:13:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:13:56,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:56,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:56,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:57,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:57,090 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:57,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:57,091 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-10-13 00:13:57,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:57,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778709685] [2021-10-13 00:13:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:57,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:57,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:13:57,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045797654] [2021-10-13 00:13:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:57,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:57,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:57,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:57,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:13:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:57,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:13:57,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:57,350 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 00:13:57,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:57,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778709685] [2021-10-13 00:13:57,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:13:57,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045797654] [2021-10-13 00:13:57,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045797654] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:13:57,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:13:57,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:13:57,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740719074] [2021-10-13 00:13:57,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:13:57,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:13:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:13:57,368 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:57,478 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-10-13 00:13:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:13:57,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 00:13:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:57,479 INFO L225 Difference]: With dead ends: 83 [2021-10-13 00:13:57,480 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:13:57,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 00:13:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:13:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-10-13 00:13:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 states have internal predecessors, (57), 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 00:13:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-10-13 00:13:57,488 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-10-13 00:13:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:57,489 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-10-13 00:13:57,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-10-13 00:13:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:13:57,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:57,490 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:57,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:57,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:57,715 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:57,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:57,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-10-13 00:13:57,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:57,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766319973] [2021-10-13 00:13:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:57,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:57,729 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:13:57,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137703389] [2021-10-13 00:13:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:57,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:57,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:57,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:57,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:13:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:57,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:13:57,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:58,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:58,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766319973] [2021-10-13 00:13:58,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:13:58,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137703389] [2021-10-13 00:13:58,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137703389] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:58,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:13:58,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:13:58,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131267059] [2021-10-13 00:13:58,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:13:58,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:58,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:13:58,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:13:58,051 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:58,191 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2021-10-13 00:13:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:13:58,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 00:13:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:58,194 INFO L225 Difference]: With dead ends: 99 [2021-10-13 00:13:58,194 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 00:13:58,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:13:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 00:13:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2021-10-13 00:13:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 60 states have internal predecessors, (63), 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 00:13:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-13 00:13:58,204 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 20 [2021-10-13 00:13:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:58,204 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-13 00:13:58,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-13 00:13:58,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:13:58,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:58,206 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:58,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:58,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:58,406 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:58,407 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-10-13 00:13:58,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:58,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834733890] [2021-10-13 00:13:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:58,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:58,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:13:58,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031387184] [2021-10-13 00:13:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:58,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:58,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:58,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:58,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:13:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:58,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:13:58,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:58,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:58,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834733890] [2021-10-13 00:13:58,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:13:58,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031387184] [2021-10-13 00:13:58,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031387184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:58,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:13:58,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-13 00:13:58,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374355658] [2021-10-13 00:13:58,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:13:58,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:13:58,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:13:58,609 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:58,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:58,637 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-10-13 00:13:58,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:13:58,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 00:13:58,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:58,638 INFO L225 Difference]: With dead ends: 83 [2021-10-13 00:13:58,639 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:13:58,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:13:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:13:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-13 00:13:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 60 states have internal predecessors, (62), 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 00:13:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-10-13 00:13:58,648 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 21 [2021-10-13 00:13:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:58,649 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-10-13 00:13:58,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-10-13 00:13:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:13:58,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:58,650 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:58,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:58,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 00:13:58,875 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-10-13 00:13:58,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:58,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514919971] [2021-10-13 00:13:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:58,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:58,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:13:58,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145129734] [2021-10-13 00:13:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:58,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:58,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:58,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:58,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:13:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:59,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:13:59,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:13:59,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:59,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514919971] [2021-10-13 00:13:59,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:13:59,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145129734] [2021-10-13 00:13:59,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145129734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:59,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:13:59,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:13:59,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95323442] [2021-10-13 00:13:59,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:13:59,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:13:59,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:13:59,217 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:13:59,337 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-10-13 00:13:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:13:59,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 00:13:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:13:59,342 INFO L225 Difference]: With dead ends: 96 [2021-10-13 00:13:59,342 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 00:13:59,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:13:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 00:13:59,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63. [2021-10-13 00:13:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 62 states have internal predecessors, (64), 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 00:13:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-10-13 00:13:59,367 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 22 [2021-10-13 00:13:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:13:59,367 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-10-13 00:13:59,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:13:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-10-13 00:13:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:13:59,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:13:59,369 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:13:59,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:13:59,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:59,583 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:13:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:13:59,584 INFO L82 PathProgramCache]: Analyzing trace with hash 534178827, now seen corresponding path program 1 times [2021-10-13 00:13:59,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:13:59,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365305653] [2021-10-13 00:13:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:59,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:13:59,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:13:59,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757405980] [2021-10-13 00:13:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:13:59,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:13:59,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:13:59,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:13:59,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:13:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:13:59,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:13:59,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:13:59,997 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 00:13:59,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:13:59,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365305653] [2021-10-13 00:13:59,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:13:59,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757405980] [2021-10-13 00:13:59,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757405980] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:13:59,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:13:59,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:13:59,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986667] [2021-10-13 00:13:59,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:13:59,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:13:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:13:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:14:00,000 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:00,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:00,139 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2021-10-13 00:14:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:14:00,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 00:14:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:00,140 INFO L225 Difference]: With dead ends: 97 [2021-10-13 00:14:00,141 INFO L226 Difference]: Without dead ends: 81 [2021-10-13 00:14:00,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:14:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-13 00:14:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-10-13 00:14:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 73 states have internal predecessors, (77), 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 00:14:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-13 00:14:00,151 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 24 [2021-10-13 00:14:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:00,151 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-13 00:14:00,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-13 00:14:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 00:14:00,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:00,153 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:00,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:00,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:00,370 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:14:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-10-13 00:14:00,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:00,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684075501] [2021-10-13 00:14:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:00,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:00,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:00,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631390457] [2021-10-13 00:14:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:00,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:00,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:00,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:00,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:14:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:00,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:14:00,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:01,610 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 00:14:01,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:01,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684075501] [2021-10-13 00:14:01,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:01,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631390457] [2021-10-13 00:14:01,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631390457] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:01,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:01,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:14:01,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515428159] [2021-10-13 00:14:01,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:01,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:01,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:01,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:01,613 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:01,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:01,872 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-10-13 00:14:01,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:14:01,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-13 00:14:01,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:01,874 INFO L225 Difference]: With dead ends: 78 [2021-10-13 00:14:01,874 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 00:14:01,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:14:01,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 00:14:01,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-10-13 00:14:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 73 states have internal predecessors, (76), 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 00:14:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-10-13 00:14:01,883 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 31 [2021-10-13 00:14:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:01,883 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-10-13 00:14:01,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-10-13 00:14:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:14:01,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:01,885 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-13 00:14:01,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:02,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:14:02,086 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:14:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2021-10-13 00:14:02,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:02,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759690985] [2021-10-13 00:14:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:02,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:02,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:02,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012634309] [2021-10-13 00:14:02,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:14:02,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:02,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:02,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:02,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:14:02,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:14:02,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:02,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:14:02,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:02,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:02,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759690985] [2021-10-13 00:14:02,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:02,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012634309] [2021-10-13 00:14:02,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012634309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:02,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:02,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:14:02,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244690712] [2021-10-13 00:14:02,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:02,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:02,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:02,687 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 00:14:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:02,918 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2021-10-13 00:14:02,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:14:02,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 00:14:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:02,920 INFO L225 Difference]: With dead ends: 119 [2021-10-13 00:14:02,920 INFO L226 Difference]: Without dead ends: 117 [2021-10-13 00:14:02,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:14:02,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-13 00:14:02,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2021-10-13 00:14:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 78 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2021-10-13 00:14:02,929 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 32 [2021-10-13 00:14:02,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:02,929 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2021-10-13 00:14:02,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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 00:14:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2021-10-13 00:14:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:14:02,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:02,931 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:02,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:03,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:03,155 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:14:03,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:03,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-10-13 00:14:03,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:03,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721766869] [2021-10-13 00:14:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:03,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:03,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:03,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009749671] [2021-10-13 00:14:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:03,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:03,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:03,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:03,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:14:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:14:03,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:14:03,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:03,871 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 00:14:03,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:03,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721766869] [2021-10-13 00:14:03,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:03,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009749671] [2021-10-13 00:14:03,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009749671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:03,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:03,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:14:03,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018643881] [2021-10-13 00:14:03,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:03,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:03,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:03,874 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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 00:14:04,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:04,090 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2021-10-13 00:14:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:14:04,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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) Word has length 33 [2021-10-13 00:14:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:04,092 INFO L225 Difference]: With dead ends: 82 [2021-10-13 00:14:04,092 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 00:14:04,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:14:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 00:14:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-10-13 00:14:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.171875) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-10-13 00:14:04,100 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 33 [2021-10-13 00:14:04,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:04,101 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-10-13 00:14:04,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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 00:14:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-10-13 00:14:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:14:04,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:04,103 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:14:04,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:04,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 00:14:04,331 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:14:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2021-10-13 00:14:04,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:04,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586053669] [2021-10-13 00:14:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:04,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:04,351 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:04,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223453876] [2021-10-13 00:14:04,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:14:04,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:04,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:04,354 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:04,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:14:04,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:14:04,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:04,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:14:04,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:04,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:04,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586053669] [2021-10-13 00:14:04,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:04,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223453876] [2021-10-13 00:14:04,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223453876] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:04,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:04,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:14:04,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019390309] [2021-10-13 00:14:04,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:14:04,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:04,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:14:04,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:14:04,730 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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 00:14:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:04,761 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2021-10-13 00:14:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:14:04,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) Word has length 33 [2021-10-13 00:14:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:04,763 INFO L225 Difference]: With dead ends: 95 [2021-10-13 00:14:04,763 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 00:14:04,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:14:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 00:14:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-13 00:14:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.15625) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:14:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-10-13 00:14:04,771 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 33 [2021-10-13 00:14:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:04,771 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-10-13 00:14:04,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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 00:14:04,771 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-10-13 00:14:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:14:04,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:04,775 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-13 00:14:04,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:05,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:05,004 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:14:05,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:05,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2021-10-13 00:14:05,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:05,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493435169] [2021-10-13 00:14:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:05,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:05,042 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:05,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282907333] [2021-10-13 00:14:05,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:14:05,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:05,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:05,044 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:05,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:14:05,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:14:05,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:05,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 00:14:05,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:14:05,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:05,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493435169] [2021-10-13 00:14:05,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:05,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282907333] [2021-10-13 00:14:05,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282907333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:14:05,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:14:05,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:14:05,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529961507] [2021-10-13 00:14:05,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:14:05,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:14:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:14:05,926 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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 00:14:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:14:06,426 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2021-10-13 00:14:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:14:06,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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 00:14:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:14:06,428 INFO L225 Difference]: With dead ends: 111 [2021-10-13 00:14:06,428 INFO L226 Difference]: Without dead ends: 109 [2021-10-13 00:14:06,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 169.5ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:14:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-13 00:14:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2021-10-13 00:14:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 74 states have internal predecessors, (76), 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 00:14:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-10-13 00:14:06,441 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2021-10-13 00:14:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:14:06,443 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-10-13 00:14:06,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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 00:14:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-10-13 00:14:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:14:06,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:14:06,445 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-13 00:14:06,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:14:06,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:14:06,669 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:14:06,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:14:06,670 INFO L82 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 2 times [2021-10-13 00:14:06,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:14:06,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676810092] [2021-10-13 00:14:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:14:06,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:14:06,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:14:06,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7600976] [2021-10-13 00:14:06,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:14:06,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:14:06,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:14:06,687 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:14:06,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:14:07,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:14:07,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:14:07,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:14:07,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:14:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:14:14,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:14:14,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676810092] [2021-10-13 00:14:14,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:14:14,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7600976] [2021-10-13 00:14:14,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7600976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:14:14,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:14:14,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 00:14:14,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496782838] [2021-10-13 00:14:14,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:14:14,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:14:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:14:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=53, Unknown=2, NotChecked=0, Total=72 [2021-10-13 00:14:14,383 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:30,634 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2021-10-13 00:15:30,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:15:30,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 00:15:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:30,636 INFO L225 Difference]: With dead ends: 95 [2021-10-13 00:15:30,636 INFO L226 Difference]: Without dead ends: 77 [2021-10-13 00:15:30,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 21047.9ms TimeCoverageRelationStatistics Valid=53, Invalid=125, Unknown=4, NotChecked=0, Total=182 [2021-10-13 00:15:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-13 00:15:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2021-10-13 00:15:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-10-13 00:15:30,656 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 36 [2021-10-13 00:15:30,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:30,656 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-10-13 00:15:30,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-10-13 00:15:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 00:15:30,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:30,658 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:30,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:30,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:15:30,883 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:15:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:30,883 INFO L82 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2021-10-13 00:15:30,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:30,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275600073] [2021-10-13 00:15:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:30,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:30,899 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:30,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553482666] [2021-10-13 00:15:30,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:15:30,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:30,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:30,900 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:30,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:15:31,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:15:31,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:31,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 00:15:31,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:32,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:32,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275600073] [2021-10-13 00:15:32,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:32,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553482666] [2021-10-13 00:15:32,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553482666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:32,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:32,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:15:32,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338015101] [2021-10-13 00:15:32,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:15:32,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:15:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:15:32,078 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 00:15:32,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:32,327 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2021-10-13 00:15:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:15:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 43 [2021-10-13 00:15:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:32,329 INFO L225 Difference]: With dead ends: 88 [2021-10-13 00:15:32,329 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 00:15:32,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:15:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 00:15:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2021-10-13 00:15:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.103896103896104) internal successors, (85), 81 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2021-10-13 00:15:32,342 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 43 [2021-10-13 00:15:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:32,342 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2021-10-13 00:15:32,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 00:15:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2021-10-13 00:15:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:15:32,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:32,345 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:32,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:32,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 00:15:32,571 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:15:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:32,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2021-10-13 00:15:32,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:32,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208954114] [2021-10-13 00:15:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:32,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:32,584 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:15:32,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437575922] [2021-10-13 00:15:32,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:15:32,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:32,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:32,592 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:32,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:15:34,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:15:34,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:34,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 00:15:34,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 00:15:52,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:52,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208954114] [2021-10-13 00:15:52,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:15:52,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437575922] [2021-10-13 00:15:52,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437575922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:15:52,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:15:52,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-13 00:15:52,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146458640] [2021-10-13 00:15:52,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:15:52,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:52,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:15:52,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=131, Unknown=3, NotChecked=0, Total=182 [2021-10-13 00:15:52,319 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 00:17:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:02,323 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2021-10-13 00:17:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:17:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 45 [2021-10-13 00:17:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:02,324 INFO L225 Difference]: With dead ends: 86 [2021-10-13 00:17:02,324 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 00:17:02,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 14917.5ms TimeCoverageRelationStatistics Valid=66, Invalid=171, Unknown=3, NotChecked=0, Total=240 [2021-10-13 00:17:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 00:17:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-10-13 00:17:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 63 states have internal predecessors, (65), 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 00:17:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-10-13 00:17:02,337 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 45 [2021-10-13 00:17:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:02,337 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-10-13 00:17:02,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 00:17:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-10-13 00:17:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:17:02,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:02,338 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:17:02,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:02,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:17:02,546 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:17:02,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:02,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1070984318, now seen corresponding path program 3 times [2021-10-13 00:17:02,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:02,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609942998] [2021-10-13 00:17:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:02,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:02,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:17:02,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213492942] [2021-10-13 00:17:02,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:17:02,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:02,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:02,559 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:02,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:17:03,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 00:17:03,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:17:03,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:17:03,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:17:03,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:03,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609942998] [2021-10-13 00:17:03,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:17:03,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213492942] [2021-10-13 00:17:03,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213492942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:03,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:17:03,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:17:03,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460357418] [2021-10-13 00:17:03,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:17:03,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:17:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:17:03,222 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 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 00:17:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:17:03,292 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2021-10-13 00:17:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:17:03,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 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 00:17:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:17:03,294 INFO L225 Difference]: With dead ends: 76 [2021-10-13 00:17:03,294 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 00:17:03,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:17:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 00:17:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-13 00:17:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.046875) internal successors, (67), 65 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:17:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-10-13 00:17:03,305 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 45 [2021-10-13 00:17:03,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:17:03,305 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-10-13 00:17:03,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 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 00:17:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-10-13 00:17:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 00:17:03,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:17:03,306 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:17:03,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:17:03,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 00:17:03,524 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:17:03,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:17:03,524 INFO L82 PathProgramCache]: Analyzing trace with hash -655791985, now seen corresponding path program 3 times [2021-10-13 00:17:03,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:17:03,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736196689] [2021-10-13 00:17:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:17:03,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:17:03,539 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:17:03,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078980852] [2021-10-13 00:17:03,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:17:03,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:17:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:17:03,541 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:17:03,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:17:05,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:17:05,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:17:05,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 00:17:05,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:17:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 00:17:59,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:17:59,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736196689] [2021-10-13 00:17:59,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:17:59,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078980852] [2021-10-13 00:17:59,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078980852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:17:59,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:17:59,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-13 00:17:59,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186092079] [2021-10-13 00:17:59,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:17:59,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:17:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:17:59,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=252, Unknown=9, NotChecked=0, Total=342 [2021-10-13 00:17:59,292 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 00:19:09,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:09,775 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-10-13 00:19:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:19:09,777 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 55 [2021-10-13 00:19:09,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:09,777 INFO L225 Difference]: With dead ends: 68 [2021-10-13 00:19:09,777 INFO L226 Difference]: Without dead ends: 62 [2021-10-13 00:19:09,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 50576.4ms TimeCoverageRelationStatistics Valid=118, Invalid=333, Unknown=11, NotChecked=0, Total=462 [2021-10-13 00:19:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-13 00:19:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-13 00:19:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 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 00:19:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-10-13 00:19:09,794 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2021-10-13 00:19:09,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:09,794 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-10-13 00:19:09,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 00:19:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-10-13 00:19:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 00:19:09,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:09,796 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:09,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-13 00:19:10,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:10,006 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1986227318, now seen corresponding path program 4 times [2021-10-13 00:19:10,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:10,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538173217] [2021-10-13 00:19:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:10,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:10,022 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:10,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115881851] [2021-10-13 00:19:10,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:19:10,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:10,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:10,024 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:10,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 00:19:10,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:19:10,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:10,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:19:10,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:10,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:10,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538173217] [2021-10-13 00:19:10,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:10,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115881851] [2021-10-13 00:19:10,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115881851] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:10,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:10,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:19:10,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618552858] [2021-10-13 00:19:10,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:19:10,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:10,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:19:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:19:10,888 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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 00:19:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:10,951 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-10-13 00:19:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:19:10,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-10-13 00:19:10,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:10,953 INFO L225 Difference]: With dead ends: 84 [2021-10-13 00:19:10,953 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 00:19:10,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:19:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 00:19:10,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-13 00:19:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:19:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-10-13 00:19:10,982 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 57 [2021-10-13 00:19:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:10,983 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-10-13 00:19:10,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 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 00:19:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-10-13 00:19:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 00:19:10,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:10,984 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:11,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:11,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:11,211 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:11,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1352185966, now seen corresponding path program 5 times [2021-10-13 00:19:11,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:11,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110025174] [2021-10-13 00:19:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:11,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:11,243 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:11,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893606705] [2021-10-13 00:19:11,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:19:11,244 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:11,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:11,245 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:11,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 00:19:12,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 00:19:12,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:12,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:19:12,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:12,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:12,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110025174] [2021-10-13 00:19:12,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:12,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893606705] [2021-10-13 00:19:12,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893606705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:12,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:12,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:19:12,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553568040] [2021-10-13 00:19:12,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:19:12,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:19:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:19:12,251 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:19:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:12,359 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-10-13 00:19:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:19:12,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-13 00:19:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:12,361 INFO L225 Difference]: With dead ends: 96 [2021-10-13 00:19:12,361 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 00:19:12,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:19:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 00:19:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-13 00:19:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:19:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-10-13 00:19:12,384 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 69 [2021-10-13 00:19:12,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:12,385 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-10-13 00:19:12,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:19:12,385 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-10-13 00:19:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-13 00:19:12,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:12,389 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:12,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:12,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:12,607 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:12,607 INFO L82 PathProgramCache]: Analyzing trace with hash 182202266, now seen corresponding path program 6 times [2021-10-13 00:19:12,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:12,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991259436] [2021-10-13 00:19:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:12,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:12,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:12,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004206753] [2021-10-13 00:19:12,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:19:12,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:12,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:12,624 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:12,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 00:19:14,181 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 00:19:14,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:14,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:19:14,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:14,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:14,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991259436] [2021-10-13 00:19:14,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:14,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004206753] [2021-10-13 00:19:14,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004206753] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:14,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:14,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:19:14,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355187607] [2021-10-13 00:19:14,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:19:14,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:14,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:19:14,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:19:14,534 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:19:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:14,613 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-10-13 00:19:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:19:14,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-13 00:19:14,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:14,627 INFO L225 Difference]: With dead ends: 108 [2021-10-13 00:19:14,627 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 00:19:14,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:19:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 00:19:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-13 00:19:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 97 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:19:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-10-13 00:19:14,650 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 81 [2021-10-13 00:19:14,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:14,651 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-10-13 00:19:14,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:19:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-10-13 00:19:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-13 00:19:14,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:14,657 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:14,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:14,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-13 00:19:14,867 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash 172837794, now seen corresponding path program 7 times [2021-10-13 00:19:14,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:14,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767947784] [2021-10-13 00:19:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:14,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:14,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:14,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603267126] [2021-10-13 00:19:14,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:19:14,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:14,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:14,884 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:14,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 00:19:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:19:15,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:19:15,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:15,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:15,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767947784] [2021-10-13 00:19:15,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:15,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603267126] [2021-10-13 00:19:15,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603267126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:15,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:15,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-13 00:19:15,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768249998] [2021-10-13 00:19:15,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:19:15,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:19:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:19:15,953 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 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 00:19:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:16,042 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-10-13 00:19:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:19:16,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 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 93 [2021-10-13 00:19:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:16,044 INFO L225 Difference]: With dead ends: 120 [2021-10-13 00:19:16,044 INFO L226 Difference]: Without dead ends: 110 [2021-10-13 00:19:16,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:19:16,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-13 00:19:16,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-13 00:19:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 109 states have internal predecessors, (110), 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 00:19:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-10-13 00:19:16,060 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 93 [2021-10-13 00:19:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:16,061 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-10-13 00:19:16,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 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 00:19:16,061 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-10-13 00:19:16,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 00:19:16,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:16,062 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:16,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:16,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:16,263 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:16,263 INFO L82 PathProgramCache]: Analyzing trace with hash 822909866, now seen corresponding path program 8 times [2021-10-13 00:19:16,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:16,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679622083] [2021-10-13 00:19:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:16,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:16,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:16,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643712775] [2021-10-13 00:19:16,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:19:16,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:16,281 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:16,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 00:19:17,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:19:17,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:17,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 00:19:17,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:17,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:17,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679622083] [2021-10-13 00:19:17,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:17,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643712775] [2021-10-13 00:19:17,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643712775] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:17,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:17,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:19:17,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555861283] [2021-10-13 00:19:17,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:19:17,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:17,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:19:17,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:19:17,449 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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 00:19:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:17,599 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2021-10-13 00:19:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:19:17,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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 105 [2021-10-13 00:19:17,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:17,601 INFO L225 Difference]: With dead ends: 132 [2021-10-13 00:19:17,602 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 00:19:17,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 131.8ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:19:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 00:19:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-13 00:19:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:19:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-10-13 00:19:17,621 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 105 [2021-10-13 00:19:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:17,622 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-10-13 00:19:17,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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 00:19:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-10-13 00:19:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-13 00:19:17,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:17,624 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:17,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:17,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-13 00:19:17,844 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:17,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1754521678, now seen corresponding path program 9 times [2021-10-13 00:19:17,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:17,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887053506] [2021-10-13 00:19:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:17,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:17,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:17,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696634006] [2021-10-13 00:19:17,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:19:17,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:17,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:17,883 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:17,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 00:19:18,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-13 00:19:18,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:18,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:19:18,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:19,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:19,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887053506] [2021-10-13 00:19:19,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:19,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696634006] [2021-10-13 00:19:19,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696634006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:19,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:19,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-13 00:19:19,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064662380] [2021-10-13 00:19:19,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:19:19,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:19:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:19:19,165 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 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 00:19:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:19,299 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2021-10-13 00:19:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:19:19,300 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 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 117 [2021-10-13 00:19:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:19,301 INFO L225 Difference]: With dead ends: 144 [2021-10-13 00:19:19,301 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 00:19:19,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:19:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 00:19:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-13 00:19:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 133 states have internal predecessors, (134), 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 00:19:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-10-13 00:19:19,326 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 117 [2021-10-13 00:19:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:19,327 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-10-13 00:19:19,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 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 00:19:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-10-13 00:19:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-13 00:19:19,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:19,329 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:19,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:19,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-13 00:19:19,536 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:19,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:19,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1790826426, now seen corresponding path program 10 times [2021-10-13 00:19:19,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:19,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114435220] [2021-10-13 00:19:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:19,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:19,561 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:19,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935806655] [2021-10-13 00:19:19,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:19:19,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:19,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:19,563 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:19,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 00:19:20,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:19:20,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:20,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 00:19:20,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:20,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:20,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114435220] [2021-10-13 00:19:20,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:20,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935806655] [2021-10-13 00:19:20,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935806655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:20,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:20,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-13 00:19:20,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729489515] [2021-10-13 00:19:20,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:19:20,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:19:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:19:20,933 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 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 00:19:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:21,106 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-10-13 00:19:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 00:19:21,106 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 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 129 [2021-10-13 00:19:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:21,108 INFO L225 Difference]: With dead ends: 156 [2021-10-13 00:19:21,108 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 00:19:21,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:19:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 00:19:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-10-13 00:19:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 145 states have internal predecessors, (146), 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 00:19:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-10-13 00:19:21,135 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 129 [2021-10-13 00:19:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:21,136 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-10-13 00:19:21,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 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 00:19:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-10-13 00:19:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-13 00:19:21,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:21,139 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:21,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:21,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 00:19:21,346 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:21,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1834206146, now seen corresponding path program 11 times [2021-10-13 00:19:21,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:21,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717881985] [2021-10-13 00:19:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:21,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:21,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:21,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355023838] [2021-10-13 00:19:21,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:19:21,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:21,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:21,376 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:21,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 00:19:24,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-13 00:19:24,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:24,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:19:24,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 0 proven. 682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:25,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:25,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717881985] [2021-10-13 00:19:25,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:25,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355023838] [2021-10-13 00:19:25,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355023838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:25,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:25,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:19:25,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619499097] [2021-10-13 00:19:25,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:19:25,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:25,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:19:25,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:19:25,162 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 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 00:19:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:25,349 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-10-13 00:19:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 00:19:25,350 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 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 141 [2021-10-13 00:19:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:25,352 INFO L225 Difference]: With dead ends: 168 [2021-10-13 00:19:25,352 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 00:19:25,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 192.9ms TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:19:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 00:19:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-13 00:19:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 157 states have internal predecessors, (158), 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 00:19:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-10-13 00:19:25,383 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 141 [2021-10-13 00:19:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:25,383 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-10-13 00:19:25,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 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 00:19:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-10-13 00:19:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-13 00:19:25,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:25,385 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:25,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:25,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 00:19:25,602 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:25,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:25,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1988092874, now seen corresponding path program 12 times [2021-10-13 00:19:25,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:25,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414528195] [2021-10-13 00:19:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:25,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:25,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:25,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995365945] [2021-10-13 00:19:25,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:19:25,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:25,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:25,648 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:25,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-13 00:19:26,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-13 00:19:26,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:26,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 00:19:26,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:27,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:27,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414528195] [2021-10-13 00:19:27,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:27,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995365945] [2021-10-13 00:19:27,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995365945] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:27,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:27,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 00:19:27,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205240000] [2021-10-13 00:19:27,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:19:27,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:19:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:19:27,321 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 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 00:19:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:27,515 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2021-10-13 00:19:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 00:19:27,531 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 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 153 [2021-10-13 00:19:27,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:27,533 INFO L225 Difference]: With dead ends: 180 [2021-10-13 00:19:27,533 INFO L226 Difference]: Without dead ends: 170 [2021-10-13 00:19:27,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 201.7ms TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:19:27,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-13 00:19:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-13 00:19:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 169 states have internal predecessors, (170), 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 00:19:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-10-13 00:19:27,565 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 153 [2021-10-13 00:19:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:27,565 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-10-13 00:19:27,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 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 00:19:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-10-13 00:19:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-10-13 00:19:27,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:27,568 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:27,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:27,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 00:19:27,779 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:27,779 INFO L82 PathProgramCache]: Analyzing trace with hash -225167406, now seen corresponding path program 13 times [2021-10-13 00:19:27,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:27,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867421612] [2021-10-13 00:19:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:27,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:27,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:27,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777849903] [2021-10-13 00:19:27,804 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:19:27,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:27,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:27,810 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:27,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 00:19:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:19:28,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 00:19:28,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:29,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:29,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867421612] [2021-10-13 00:19:29,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:29,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777849903] [2021-10-13 00:19:29,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777849903] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:29,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:29,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-13 00:19:29,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118264419] [2021-10-13 00:19:29,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 00:19:29,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 00:19:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:19:29,435 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 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 00:19:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:29,624 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2021-10-13 00:19:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 00:19:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 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 165 [2021-10-13 00:19:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:29,627 INFO L225 Difference]: With dead ends: 192 [2021-10-13 00:19:29,627 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 00:19:29,628 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 233.6ms TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:19:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 00:19:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-10-13 00:19:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.011111111111111) internal successors, (182), 181 states have internal predecessors, (182), 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 00:19:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-10-13 00:19:29,669 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 165 [2021-10-13 00:19:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:29,670 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-10-13 00:19:29,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 states have internal predecessors, (165), 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 00:19:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-10-13 00:19:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-13 00:19:29,672 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:29,672 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:29,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:29,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 00:19:29,887 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:29,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1659027418, now seen corresponding path program 14 times [2021-10-13 00:19:29,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:29,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759416600] [2021-10-13 00:19:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:29,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:29,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:29,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246115778] [2021-10-13 00:19:29,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:19:29,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:29,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:29,910 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:29,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-13 00:19:30,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:19:30,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:30,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 00:19:30,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 0 proven. 1120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:31,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:31,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759416600] [2021-10-13 00:19:31,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:31,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246115778] [2021-10-13 00:19:31,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246115778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:31,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:31,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-13 00:19:31,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097526184] [2021-10-13 00:19:31,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 00:19:31,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:19:31,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:19:31,678 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 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 00:19:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:31,940 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-10-13 00:19:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 00:19:31,941 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 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 177 [2021-10-13 00:19:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:31,942 INFO L225 Difference]: With dead ends: 204 [2021-10-13 00:19:31,942 INFO L226 Difference]: Without dead ends: 194 [2021-10-13 00:19:31,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 286.3ms TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:19:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-13 00:19:31,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-10-13 00:19:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 193 states have internal predecessors, (194), 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 00:19:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-10-13 00:19:31,979 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 177 [2021-10-13 00:19:31,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:31,979 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-10-13 00:19:31,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 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 00:19:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-10-13 00:19:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-10-13 00:19:31,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:31,981 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:32,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:32,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:32,187 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:32,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:32,187 INFO L82 PathProgramCache]: Analyzing trace with hash -574784542, now seen corresponding path program 15 times [2021-10-13 00:19:32,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:32,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579475347] [2021-10-13 00:19:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:32,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:32,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:32,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028926120] [2021-10-13 00:19:32,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:19:32,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:32,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:32,206 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:32,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-13 00:19:33,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-13 00:19:33,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:33,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 00:19:33,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 0 proven. 1290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:34,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:34,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579475347] [2021-10-13 00:19:34,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:34,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028926120] [2021-10-13 00:19:34,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028926120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:34,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:34,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-13 00:19:34,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559637416] [2021-10-13 00:19:34,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:19:34,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:19:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:19:34,287 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 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 00:19:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:34,574 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2021-10-13 00:19:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 00:19:34,575 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 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 189 [2021-10-13 00:19:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:34,577 INFO L225 Difference]: With dead ends: 216 [2021-10-13 00:19:34,577 INFO L226 Difference]: Without dead ends: 206 [2021-10-13 00:19:34,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 330.7ms TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:19:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-13 00:19:34,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-10-13 00:19:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 205 states have internal predecessors, (206), 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 00:19:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-10-13 00:19:34,627 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 189 [2021-10-13 00:19:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:34,628 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-10-13 00:19:34,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 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 00:19:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-10-13 00:19:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-10-13 00:19:34,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:34,631 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:34,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:34,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-13 00:19:34,855 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:34,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:34,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1904841750, now seen corresponding path program 16 times [2021-10-13 00:19:34,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:34,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690252209] [2021-10-13 00:19:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:34,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:34,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:34,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28868083] [2021-10-13 00:19:34,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:19:34,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:34,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:34,884 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:34,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-13 00:19:36,267 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:19:36,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:36,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 00:19:36,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:37,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:37,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690252209] [2021-10-13 00:19:37,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:37,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28868083] [2021-10-13 00:19:37,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28868083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:37,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:37,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-13 00:19:37,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084651239] [2021-10-13 00:19:37,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:19:37,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:37,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:19:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:19:37,040 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 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 00:19:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:37,337 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2021-10-13 00:19:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 00:19:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 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 201 [2021-10-13 00:19:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:37,342 INFO L225 Difference]: With dead ends: 228 [2021-10-13 00:19:37,342 INFO L226 Difference]: Without dead ends: 218 [2021-10-13 00:19:37,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 340.4ms TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 00:19:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-13 00:19:37,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-10-13 00:19:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 217 states have internal predecessors, (218), 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 00:19:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-10-13 00:19:37,386 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 201 [2021-10-13 00:19:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:37,387 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-10-13 00:19:37,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 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 00:19:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-10-13 00:19:37,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-13 00:19:37,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:37,389 INFO L512 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:37,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:37,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-13 00:19:37,604 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:37,604 INFO L82 PathProgramCache]: Analyzing trace with hash 895455218, now seen corresponding path program 17 times [2021-10-13 00:19:37,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:37,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020889740] [2021-10-13 00:19:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:37,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:37,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:37,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670957483] [2021-10-13 00:19:37,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:19:37,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:37,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:37,641 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:37,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-13 00:19:40,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-13 00:19:40,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:40,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 00:19:40,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 0 proven. 1666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:41,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:41,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020889740] [2021-10-13 00:19:41,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:41,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670957483] [2021-10-13 00:19:41,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670957483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:41,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:41,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-10-13 00:19:41,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927946514] [2021-10-13 00:19:41,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:19:41,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:41,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:19:41,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:19:41,189 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 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 00:19:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:41,519 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2021-10-13 00:19:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 00:19:41,520 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 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 213 [2021-10-13 00:19:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:41,523 INFO L225 Difference]: With dead ends: 240 [2021-10-13 00:19:41,523 INFO L226 Difference]: Without dead ends: 230 [2021-10-13 00:19:41,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 404.4ms TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 00:19:41,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-13 00:19:41,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-10-13 00:19:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 229 states have internal predecessors, (230), 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 00:19:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2021-10-13 00:19:41,564 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 213 [2021-10-13 00:19:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:41,565 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2021-10-13 00:19:41,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 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 00:19:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2021-10-13 00:19:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-13 00:19:41,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:41,567 INFO L512 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:41,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-13 00:19:41,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:41,779 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:41,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1479874566, now seen corresponding path program 18 times [2021-10-13 00:19:41,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:41,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540635003] [2021-10-13 00:19:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:41,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:41,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:41,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12514980] [2021-10-13 00:19:41,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:19:41,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:41,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:41,796 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:41,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 00:19:44,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-13 00:19:44,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:44,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-13 00:19:44,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 1872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:45,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:45,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540635003] [2021-10-13 00:19:45,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:45,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12514980] [2021-10-13 00:19:45,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12514980] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:45,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:45,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-13 00:19:45,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762377350] [2021-10-13 00:19:45,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:19:45,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:19:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:19:45,042 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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 00:19:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:45,384 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2021-10-13 00:19:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 00:19:45,384 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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 225 [2021-10-13 00:19:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:45,386 INFO L225 Difference]: With dead ends: 252 [2021-10-13 00:19:45,386 INFO L226 Difference]: Without dead ends: 242 [2021-10-13 00:19:45,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 422.4ms TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 00:19:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-13 00:19:45,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-13 00:19:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 241 states have internal predecessors, (242), 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 00:19:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2021-10-13 00:19:45,424 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 225 [2021-10-13 00:19:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:45,425 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2021-10-13 00:19:45,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 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 00:19:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2021-10-13 00:19:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-10-13 00:19:45,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:45,428 INFO L512 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:45,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-13 00:19:45,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-13 00:19:45,648 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:45,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1342862338, now seen corresponding path program 19 times [2021-10-13 00:19:45,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:45,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920549087] [2021-10-13 00:19:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:45,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:45,676 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:45,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272282370] [2021-10-13 00:19:45,677 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:19:45,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:45,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:45,678 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:45,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 00:19:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:19:47,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 00:19:47,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2090 backedges. 0 proven. 2090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:48,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:48,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920549087] [2021-10-13 00:19:48,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:48,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272282370] [2021-10-13 00:19:48,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272282370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:48,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:48,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-10-13 00:19:48,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57818202] [2021-10-13 00:19:48,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 00:19:48,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:48,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 00:19:48,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-10-13 00:19:48,049 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 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 00:19:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:48,417 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2021-10-13 00:19:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 00:19:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 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 237 [2021-10-13 00:19:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:48,420 INFO L225 Difference]: With dead ends: 264 [2021-10-13 00:19:48,420 INFO L226 Difference]: Without dead ends: 254 [2021-10-13 00:19:48,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 508.2ms TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 00:19:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-13 00:19:48,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-10-13 00:19:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.007936507936508) internal successors, (254), 253 states have internal predecessors, (254), 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 00:19:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2021-10-13 00:19:48,467 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 237 [2021-10-13 00:19:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:48,468 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2021-10-13 00:19:48,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 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 00:19:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2021-10-13 00:19:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-10-13 00:19:48,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:48,470 INFO L512 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:48,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:48,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 00:19:48,687 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:48,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1385155574, now seen corresponding path program 20 times [2021-10-13 00:19:48,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:48,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023838344] [2021-10-13 00:19:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:48,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:48,711 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:48,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369606144] [2021-10-13 00:19:48,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:19:48,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:48,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:48,713 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:48,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 00:19:50,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:19:50,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:50,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 00:19:50,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 0 proven. 2320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:51,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:51,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023838344] [2021-10-13 00:19:51,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:51,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369606144] [2021-10-13 00:19:51,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369606144] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:51,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:51,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-10-13 00:19:51,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022990950] [2021-10-13 00:19:51,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 00:19:51,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:51,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 00:19:51,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:19:51,174 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand has 24 states, 24 states have (on average 10.375) internal successors, (249), 23 states have internal predecessors, (249), 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 00:19:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:51,511 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2021-10-13 00:19:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 00:19:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.375) internal successors, (249), 23 states have internal predecessors, (249), 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 249 [2021-10-13 00:19:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:51,514 INFO L225 Difference]: With dead ends: 276 [2021-10-13 00:19:51,514 INFO L226 Difference]: Without dead ends: 266 [2021-10-13 00:19:51,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 459.8ms TimeCoverageRelationStatistics Valid=715, Invalid=1177, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 00:19:51,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-13 00:19:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-13 00:19:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 264 states have (on average 1.0075757575757576) internal successors, (266), 265 states have internal predecessors, (266), 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 00:19:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2021-10-13 00:19:51,571 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 249 [2021-10-13 00:19:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:51,571 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2021-10-13 00:19:51,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.375) internal successors, (249), 23 states have internal predecessors, (249), 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 00:19:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2021-10-13 00:19:51,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-10-13 00:19:51,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:51,574 INFO L512 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:51,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:51,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:51,787 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:51,788 INFO L82 PathProgramCache]: Analyzing trace with hash -733075438, now seen corresponding path program 21 times [2021-10-13 00:19:51,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:51,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627012530] [2021-10-13 00:19:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:51,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:51,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:51,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329765722] [2021-10-13 00:19:51,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:19:51,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:51,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:51,847 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:51,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 00:19:53,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-10-13 00:19:53,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:53,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 00:19:53,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 0 proven. 2562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:54,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:54,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627012530] [2021-10-13 00:19:54,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:54,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329765722] [2021-10-13 00:19:54,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329765722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:54,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:54,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-10-13 00:19:54,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682247766] [2021-10-13 00:19:54,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 00:19:54,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 00:19:54,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:19:54,560 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand has 25 states, 25 states have (on average 10.44) internal successors, (261), 24 states have internal predecessors, (261), 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 00:19:54,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:54,953 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2021-10-13 00:19:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 00:19:54,954 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.44) internal successors, (261), 24 states have internal predecessors, (261), 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 261 [2021-10-13 00:19:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:54,955 INFO L225 Difference]: With dead ends: 288 [2021-10-13 00:19:54,956 INFO L226 Difference]: Without dead ends: 278 [2021-10-13 00:19:54,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 486.6ms TimeCoverageRelationStatistics Valid=782, Invalid=1288, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 00:19:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-13 00:19:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-10-13 00:19:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 276 states have (on average 1.0072463768115942) internal successors, (278), 277 states have internal predecessors, (278), 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 00:19:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2021-10-13 00:19:55,027 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 261 [2021-10-13 00:19:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:55,028 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2021-10-13 00:19:55,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.44) internal successors, (261), 24 states have internal predecessors, (261), 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 00:19:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2021-10-13 00:19:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-10-13 00:19:55,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:55,032 INFO L512 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:55,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:55,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 00:19:55,247 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash -302624742, now seen corresponding path program 22 times [2021-10-13 00:19:55,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:55,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915518019] [2021-10-13 00:19:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:55,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:55,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:55,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092746785] [2021-10-13 00:19:55,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:19:55,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:55,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:55,291 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:55,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 00:19:57,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:19:57,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:19:57,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 00:19:57,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:19:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2816 backedges. 0 proven. 2816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:19:58,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:19:58,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915518019] [2021-10-13 00:19:58,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:19:58,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092746785] [2021-10-13 00:19:58,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092746785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:19:58,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:19:58,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2021-10-13 00:19:58,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127060735] [2021-10-13 00:19:58,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 00:19:58,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:19:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 00:19:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2021-10-13 00:19:58,207 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 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 00:19:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:19:58,576 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions. [2021-10-13 00:19:58,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 00:19:58,577 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 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 273 [2021-10-13 00:19:58,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:19:58,578 INFO L225 Difference]: With dead ends: 300 [2021-10-13 00:19:58,579 INFO L226 Difference]: Without dead ends: 290 [2021-10-13 00:19:58,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 567.4ms TimeCoverageRelationStatistics Valid=852, Invalid=1404, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 00:19:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-13 00:19:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-10-13 00:19:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 288 states have (on average 1.0069444444444444) internal successors, (290), 289 states have internal predecessors, (290), 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 00:19:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2021-10-13 00:19:58,660 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 273 [2021-10-13 00:19:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:19:58,660 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2021-10-13 00:19:58,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 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 00:19:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2021-10-13 00:19:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-10-13 00:19:58,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:19:58,663 INFO L512 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:19:58,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-13 00:19:58,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 00:19:58,867 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:19:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:19:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1195725790, now seen corresponding path program 23 times [2021-10-13 00:19:58,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:19:58,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079723644] [2021-10-13 00:19:58,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:19:58,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:19:58,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:19:58,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614604353] [2021-10-13 00:19:58,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:19:58,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:19:58,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:19:58,899 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:19:58,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-13 00:20:13,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-10-13 00:20:13,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:20:13,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 00:20:13,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 3082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:14,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:14,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079723644] [2021-10-13 00:20:14,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:20:14,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614604353] [2021-10-13 00:20:14,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614604353] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:20:14,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:20:14,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-10-13 00:20:14,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825690902] [2021-10-13 00:20:14,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 00:20:14,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 00:20:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-10-13 00:20:14,366 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand has 27 states, 27 states have (on average 10.555555555555555) internal successors, (285), 26 states have internal predecessors, (285), 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 00:20:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:14,795 INFO L93 Difference]: Finished difference Result 312 states and 312 transitions. [2021-10-13 00:20:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 00:20:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.555555555555555) internal successors, (285), 26 states have internal predecessors, (285), 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 285 [2021-10-13 00:20:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:14,797 INFO L225 Difference]: With dead ends: 312 [2021-10-13 00:20:14,797 INFO L226 Difference]: Without dead ends: 302 [2021-10-13 00:20:14,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 558.7ms TimeCoverageRelationStatistics Valid=925, Invalid=1525, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 00:20:14,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-13 00:20:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-10-13 00:20:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 300 states have (on average 1.0066666666666666) internal successors, (302), 301 states have internal predecessors, (302), 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 00:20:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2021-10-13 00:20:14,856 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 285 [2021-10-13 00:20:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:14,856 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2021-10-13 00:20:14,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.555555555555555) internal successors, (285), 26 states have internal predecessors, (285), 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 00:20:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2021-10-13 00:20:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-10-13 00:20:14,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:14,858 INFO L512 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:14,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:15,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 00:20:15,059 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:20:15,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:15,059 INFO L82 PathProgramCache]: Analyzing trace with hash 132987946, now seen corresponding path program 24 times [2021-10-13 00:20:15,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:15,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685583303] [2021-10-13 00:20:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:15,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:15,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:20:15,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788769218] [2021-10-13 00:20:15,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:20:15,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:15,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:15,094 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:20:15,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-13 00:20:25,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-13 00:20:25,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:20:25,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 00:20:25,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3360 backedges. 0 proven. 3360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:26,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:26,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685583303] [2021-10-13 00:20:26,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:20:26,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788769218] [2021-10-13 00:20:26,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788769218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:20:26,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:20:26,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-10-13 00:20:26,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520459177] [2021-10-13 00:20:26,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 00:20:26,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:26,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 00:20:26,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:20:26,616 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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 00:20:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:27,051 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2021-10-13 00:20:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 00:20:27,051 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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 297 [2021-10-13 00:20:27,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:27,053 INFO L225 Difference]: With dead ends: 324 [2021-10-13 00:20:27,053 INFO L226 Difference]: Without dead ends: 314 [2021-10-13 00:20:27,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 638.6ms TimeCoverageRelationStatistics Valid=1001, Invalid=1651, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 00:20:27,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-13 00:20:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-10-13 00:20:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 312 states have (on average 1.0064102564102564) internal successors, (314), 313 states have internal predecessors, (314), 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 00:20:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2021-10-13 00:20:27,101 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 297 [2021-10-13 00:20:27,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:27,102 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2021-10-13 00:20:27,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 states have internal predecessors, (297), 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 00:20:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2021-10-13 00:20:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-10-13 00:20:27,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:27,105 INFO L512 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:27,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-13 00:20:27,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 00:20:27,319 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:20:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:27,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1138753586, now seen corresponding path program 25 times [2021-10-13 00:20:27,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:27,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635239456] [2021-10-13 00:20:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:27,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:27,339 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:20:27,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353734894] [2021-10-13 00:20:27,339 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:20:27,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:27,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:27,345 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:20:27,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-13 00:20:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:20:29,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 00:20:29,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:30,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:30,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635239456] [2021-10-13 00:20:30,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:20:30,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353734894] [2021-10-13 00:20:30,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353734894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:20:30,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:20:30,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-10-13 00:20:30,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002672002] [2021-10-13 00:20:30,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 00:20:30,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 00:20:30,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:20:30,371 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand has 29 states, 29 states have (on average 10.655172413793103) internal successors, (309), 28 states have internal predecessors, (309), 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 00:20:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:30,845 INFO L93 Difference]: Finished difference Result 336 states and 336 transitions. [2021-10-13 00:20:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 00:20:30,846 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.655172413793103) internal successors, (309), 28 states have internal predecessors, (309), 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 309 [2021-10-13 00:20:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:30,848 INFO L225 Difference]: With dead ends: 336 [2021-10-13 00:20:30,848 INFO L226 Difference]: Without dead ends: 326 [2021-10-13 00:20:30,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 615.0ms TimeCoverageRelationStatistics Valid=1080, Invalid=1782, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 00:20:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-13 00:20:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-10-13 00:20:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 324 states have (on average 1.0061728395061729) internal successors, (326), 325 states have internal predecessors, (326), 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 00:20:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 326 transitions. [2021-10-13 00:20:30,897 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 326 transitions. Word has length 309 [2021-10-13 00:20:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:30,898 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 326 transitions. [2021-10-13 00:20:30,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.655172413793103) internal successors, (309), 28 states have internal predecessors, (309), 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 00:20:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 326 transitions. [2021-10-13 00:20:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-10-13 00:20:30,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:30,901 INFO L512 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:30,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:31,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:31,127 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:20:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash -370870214, now seen corresponding path program 26 times [2021-10-13 00:20:31,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:31,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422233027] [2021-10-13 00:20:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:31,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:31,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:20:31,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226903833] [2021-10-13 00:20:31,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:20:31,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:31,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:31,153 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:20:31,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-13 00:20:33,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:20:33,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:20:33,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 00:20:33,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3952 backedges. 0 proven. 3952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:34,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:34,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422233027] [2021-10-13 00:20:34,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:20:34,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226903833] [2021-10-13 00:20:34,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226903833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:20:34,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:20:34,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-10-13 00:20:34,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663753725] [2021-10-13 00:20:34,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-13 00:20:34,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:34,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-13 00:20:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-10-13 00:20:34,363 INFO L87 Difference]: Start difference. First operand 326 states and 326 transitions. Second operand has 30 states, 30 states have (on average 10.7) internal successors, (321), 29 states have internal predecessors, (321), 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 00:20:34,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:34,850 INFO L93 Difference]: Finished difference Result 348 states and 348 transitions. [2021-10-13 00:20:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 00:20:34,855 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.7) internal successors, (321), 29 states have internal predecessors, (321), 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 321 [2021-10-13 00:20:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:34,858 INFO L225 Difference]: With dead ends: 348 [2021-10-13 00:20:34,858 INFO L226 Difference]: Without dead ends: 338 [2021-10-13 00:20:34,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 698.5ms TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 00:20:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-13 00:20:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2021-10-13 00:20:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 336 states have (on average 1.005952380952381) internal successors, (338), 337 states have internal predecessors, (338), 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 00:20:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2021-10-13 00:20:34,900 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 321 [2021-10-13 00:20:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:34,901 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2021-10-13 00:20:34,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.7) internal successors, (321), 29 states have internal predecessors, (321), 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 00:20:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2021-10-13 00:20:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-10-13 00:20:34,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:34,903 INFO L512 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:34,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:35,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:35,104 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:20:35,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:35,104 INFO L82 PathProgramCache]: Analyzing trace with hash 206447682, now seen corresponding path program 27 times [2021-10-13 00:20:35,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:35,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084902085] [2021-10-13 00:20:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:35,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:35,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:20:35,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225571098] [2021-10-13 00:20:35,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:20:35,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:35,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:35,162 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:20:35,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-13 00:20:37,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-10-13 00:20:37,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:20:37,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-13 00:20:37,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4266 backedges. 0 proven. 4266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:38,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:38,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084902085] [2021-10-13 00:20:38,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:20:38,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225571098] [2021-10-13 00:20:38,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225571098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:20:38,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:20:38,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-10-13 00:20:38,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434638276] [2021-10-13 00:20:38,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-13 00:20:38,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-13 00:20:38,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-10-13 00:20:38,914 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand has 31 states, 31 states have (on average 10.741935483870968) internal successors, (333), 30 states have internal predecessors, (333), 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 00:20:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:39,445 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2021-10-13 00:20:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 00:20:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.741935483870968) internal successors, (333), 30 states have internal predecessors, (333), 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 333 [2021-10-13 00:20:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:39,447 INFO L225 Difference]: With dead ends: 360 [2021-10-13 00:20:39,447 INFO L226 Difference]: Without dead ends: 350 [2021-10-13 00:20:39,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 738.4ms TimeCoverageRelationStatistics Valid=1247, Invalid=2059, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 00:20:39,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-13 00:20:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-10-13 00:20:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 348 states have (on average 1.0057471264367817) internal successors, (350), 349 states have internal predecessors, (350), 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 00:20:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 350 transitions. [2021-10-13 00:20:39,493 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 350 transitions. Word has length 333 [2021-10-13 00:20:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:39,493 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 350 transitions. [2021-10-13 00:20:39,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.741935483870968) internal successors, (333), 30 states have internal predecessors, (333), 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 00:20:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 350 transitions. [2021-10-13 00:20:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-10-13 00:20:39,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:39,496 INFO L512 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:39,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:39,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:39,719 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:20:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash -764574646, now seen corresponding path program 28 times [2021-10-13 00:20:39,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:39,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71727293] [2021-10-13 00:20:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:39,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:39,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:20:39,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276412494] [2021-10-13 00:20:39,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:20:39,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:39,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:39,762 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:20:39,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-13 00:20:42,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:20:42,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:20:42,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-13 00:20:42,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:20:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 0 proven. 4592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:20:43,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:20:43,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71727293] [2021-10-13 00:20:43,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:20:43,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276412494] [2021-10-13 00:20:43,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276412494] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:20:43,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:20:43,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-10-13 00:20:43,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399342895] [2021-10-13 00:20:43,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 00:20:43,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:20:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 00:20:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:20:43,603 INFO L87 Difference]: Start difference. First operand 350 states and 350 transitions. Second operand has 32 states, 32 states have (on average 10.78125) internal successors, (345), 31 states have internal predecessors, (345), 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 00:20:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:20:44,153 INFO L93 Difference]: Finished difference Result 372 states and 372 transitions. [2021-10-13 00:20:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-13 00:20:44,154 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.78125) internal successors, (345), 31 states have internal predecessors, (345), 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 345 [2021-10-13 00:20:44,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:20:44,157 INFO L225 Difference]: With dead ends: 372 [2021-10-13 00:20:44,157 INFO L226 Difference]: Without dead ends: 362 [2021-10-13 00:20:44,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 782.7ms TimeCoverageRelationStatistics Valid=1335, Invalid=2205, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 00:20:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-10-13 00:20:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-10-13 00:20:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 360 states have (on average 1.0055555555555555) internal successors, (362), 361 states have internal predecessors, (362), 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 00:20:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2021-10-13 00:20:44,232 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 345 [2021-10-13 00:20:44,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:20:44,233 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2021-10-13 00:20:44,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.78125) internal successors, (345), 31 states have internal predecessors, (345), 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 00:20:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2021-10-13 00:20:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-10-13 00:20:44,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:20:44,236 INFO L512 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:20:44,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-13 00:20:44,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:44,436 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:20:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:20:44,437 INFO L82 PathProgramCache]: Analyzing trace with hash -124446638, now seen corresponding path program 29 times [2021-10-13 00:20:44,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:20:44,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096877722] [2021-10-13 00:20:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:20:44,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:20:44,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:20:44,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139470873] [2021-10-13 00:20:44,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:20:44,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:20:44,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:20:44,511 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:20:44,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 00:21:11,833 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-10-13 00:21:11,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:21:11,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-13 00:21:11,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4930 backedges. 0 proven. 4930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:13,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:21:13,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096877722] [2021-10-13 00:21:13,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:21:13,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139470873] [2021-10-13 00:21:13,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139470873] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:21:13,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:21:13,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-10-13 00:21:13,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518493317] [2021-10-13 00:21:13,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-13 00:21:13,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:21:13,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-13 00:21:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 00:21:13,469 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand has 33 states, 33 states have (on average 10.818181818181818) internal successors, (357), 32 states have internal predecessors, (357), 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 00:21:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:21:14,149 INFO L93 Difference]: Finished difference Result 384 states and 384 transitions. [2021-10-13 00:21:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-13 00:21:14,149 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 10.818181818181818) internal successors, (357), 32 states have internal predecessors, (357), 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 357 [2021-10-13 00:21:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:21:14,152 INFO L225 Difference]: With dead ends: 384 [2021-10-13 00:21:14,153 INFO L226 Difference]: Without dead ends: 374 [2021-10-13 00:21:14,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 946.8ms TimeCoverageRelationStatistics Valid=1426, Invalid=2356, Unknown=0, NotChecked=0, Total=3782 [2021-10-13 00:21:14,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-10-13 00:21:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-10-13 00:21:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 372 states have (on average 1.0053763440860215) internal successors, (374), 373 states have internal predecessors, (374), 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 00:21:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2021-10-13 00:21:14,213 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 357 [2021-10-13 00:21:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:21:14,213 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2021-10-13 00:21:14,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.818181818181818) internal successors, (357), 32 states have internal predecessors, (357), 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 00:21:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2021-10-13 00:21:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-10-13 00:21:14,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:14,216 INFO L512 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:21:14,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:14,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:14,417 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:21:14,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:14,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1343676506, now seen corresponding path program 30 times [2021-10-13 00:21:14,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:14,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435591412] [2021-10-13 00:21:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:14,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:14,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:21:14,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906401201] [2021-10-13 00:21:14,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:21:14,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:14,482 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:21:14,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-13 00:21:17,783 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-13 00:21:17,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:21:17,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-13 00:21:17,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5280 backedges. 0 proven. 5280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:19,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:21:19,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435591412] [2021-10-13 00:21:19,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:21:19,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906401201] [2021-10-13 00:21:19,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906401201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:21:19,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:21:19,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2021-10-13 00:21:19,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864627273] [2021-10-13 00:21:19,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-13 00:21:19,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:21:19,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-13 00:21:19,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:21:19,379 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand has 34 states, 34 states have (on average 10.852941176470589) internal successors, (369), 33 states have internal predecessors, (369), 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 00:21:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:21:20,051 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2021-10-13 00:21:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-13 00:21:20,052 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.852941176470589) internal successors, (369), 33 states have internal predecessors, (369), 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 369 [2021-10-13 00:21:20,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:21:20,054 INFO L225 Difference]: With dead ends: 396 [2021-10-13 00:21:20,054 INFO L226 Difference]: Without dead ends: 386 [2021-10-13 00:21:20,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 962.0ms TimeCoverageRelationStatistics Valid=1520, Invalid=2512, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 00:21:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-13 00:21:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-10-13 00:21:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 384 states have (on average 1.0052083333333333) internal successors, (386), 385 states have internal predecessors, (386), 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 00:21:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2021-10-13 00:21:20,129 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 369 [2021-10-13 00:21:20,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:21:20,130 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2021-10-13 00:21:20,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.852941176470589) internal successors, (369), 33 states have internal predecessors, (369), 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 00:21:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2021-10-13 00:21:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-10-13 00:21:20,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:20,133 INFO L512 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:21:20,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:20,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-13 00:21:20,334 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:21:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:20,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1061477474, now seen corresponding path program 31 times [2021-10-13 00:21:20,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:20,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761202584] [2021-10-13 00:21:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:20,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:20,365 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:21:20,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544822413] [2021-10-13 00:21:20,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:21:20,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:20,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:20,366 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:21:20,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-13 00:21:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:23,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-13 00:21:23,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5642 backedges. 0 proven. 5642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:24,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:21:24,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761202584] [2021-10-13 00:21:24,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:21:24,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544822413] [2021-10-13 00:21:24,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544822413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:21:24,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:21:24,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2021-10-13 00:21:24,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269412052] [2021-10-13 00:21:24,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 00:21:24,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:21:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 00:21:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:21:24,959 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand has 35 states, 35 states have (on average 10.885714285714286) internal successors, (381), 34 states have internal predecessors, (381), 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 00:21:25,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:21:25,676 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2021-10-13 00:21:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-13 00:21:25,676 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 10.885714285714286) internal successors, (381), 34 states have internal predecessors, (381), 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 381 [2021-10-13 00:21:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:21:25,678 INFO L225 Difference]: With dead ends: 408 [2021-10-13 00:21:25,678 INFO L226 Difference]: Without dead ends: 398 [2021-10-13 00:21:25,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1026.6ms TimeCoverageRelationStatistics Valid=1617, Invalid=2673, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 00:21:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-13 00:21:25,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-10-13 00:21:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 396 states have (on average 1.005050505050505) internal successors, (398), 397 states have internal predecessors, (398), 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 00:21:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2021-10-13 00:21:25,746 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 381 [2021-10-13 00:21:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:21:25,746 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2021-10-13 00:21:25,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.885714285714286) internal successors, (381), 34 states have internal predecessors, (381), 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 00:21:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2021-10-13 00:21:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-10-13 00:21:25,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:25,750 INFO L512 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:21:25,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-13 00:21:25,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 00:21:25,971 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:21:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1097927786, now seen corresponding path program 32 times [2021-10-13 00:21:25,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:25,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104272652] [2021-10-13 00:21:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:25,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:26,032 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:21:26,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720814902] [2021-10-13 00:21:26,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:21:26,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:26,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:26,034 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:21:26,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-13 00:21:28,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:21:28,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:21:28,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-13 00:21:29,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6016 backedges. 0 proven. 6016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:30,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:21:30,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104272652] [2021-10-13 00:21:30,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:21:30,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720814902] [2021-10-13 00:21:30,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720814902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:21:30,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:21:30,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-10-13 00:21:30,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252695726] [2021-10-13 00:21:30,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-13 00:21:30,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:21:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-13 00:21:30,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 00:21:30,920 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand has 36 states, 36 states have (on average 10.916666666666666) internal successors, (393), 35 states have internal predecessors, (393), 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 00:21:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:21:31,687 INFO L93 Difference]: Finished difference Result 420 states and 420 transitions. [2021-10-13 00:21:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-13 00:21:31,688 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.916666666666666) internal successors, (393), 35 states have internal predecessors, (393), 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 393 [2021-10-13 00:21:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:21:31,690 INFO L225 Difference]: With dead ends: 420 [2021-10-13 00:21:31,690 INFO L226 Difference]: Without dead ends: 410 [2021-10-13 00:21:31,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1151.5ms TimeCoverageRelationStatistics Valid=1717, Invalid=2839, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 00:21:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-13 00:21:31,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-10-13 00:21:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 408 states have (on average 1.0049019607843137) internal successors, (410), 409 states have internal predecessors, (410), 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 00:21:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2021-10-13 00:21:31,772 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 393 [2021-10-13 00:21:31,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:21:31,772 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2021-10-13 00:21:31,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.916666666666666) internal successors, (393), 35 states have internal predecessors, (393), 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 00:21:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2021-10-13 00:21:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-10-13 00:21:31,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:31,777 INFO L512 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:21:31,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:31,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 00:21:31,991 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:21:31,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:31,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1726836850, now seen corresponding path program 33 times [2021-10-13 00:21:31,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:31,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129697008] [2021-10-13 00:21:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:31,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:32,082 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:21:32,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115848462] [2021-10-13 00:21:32,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:21:32,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:32,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:32,084 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:21:32,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-13 00:21:35,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-10-13 00:21:35,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:21:35,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-13 00:21:35,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6402 backedges. 0 proven. 6402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:37,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:21:37,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129697008] [2021-10-13 00:21:37,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:21:37,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115848462] [2021-10-13 00:21:37,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115848462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:21:37,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:21:37,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2021-10-13 00:21:37,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391442409] [2021-10-13 00:21:37,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-13 00:21:37,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:21:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 00:21:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 00:21:37,465 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand has 37 states, 37 states have (on average 10.945945945945946) internal successors, (405), 36 states have internal predecessors, (405), 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 00:21:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:21:38,289 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2021-10-13 00:21:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-13 00:21:38,289 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 10.945945945945946) internal successors, (405), 36 states have internal predecessors, (405), 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 405 [2021-10-13 00:21:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:21:38,292 INFO L225 Difference]: With dead ends: 432 [2021-10-13 00:21:38,292 INFO L226 Difference]: Without dead ends: 422 [2021-10-13 00:21:38,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1156.0ms TimeCoverageRelationStatistics Valid=1820, Invalid=3010, Unknown=0, NotChecked=0, Total=4830 [2021-10-13 00:21:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-10-13 00:21:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2021-10-13 00:21:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.0047619047619047) internal successors, (422), 421 states have internal predecessors, (422), 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 00:21:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 422 transitions. [2021-10-13 00:21:38,356 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 422 transitions. Word has length 405 [2021-10-13 00:21:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:21:38,356 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 422 transitions. [2021-10-13 00:21:38,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 10.945945945945946) internal successors, (405), 36 states have internal predecessors, (405), 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 00:21:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 422 transitions. [2021-10-13 00:21:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-10-13 00:21:38,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:38,359 INFO L512 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:21:38,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:38,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 00:21:38,563 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:21:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash -720631686, now seen corresponding path program 34 times [2021-10-13 00:21:38,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:38,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073136451] [2021-10-13 00:21:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:38,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:38,612 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:21:38,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310595240] [2021-10-13 00:21:38,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:21:38,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:38,614 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:21:38,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-13 00:21:42,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:21:42,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:21:42,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-13 00:21:42,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6800 backedges. 0 proven. 6800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:44,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:21:44,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073136451] [2021-10-13 00:21:44,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:21:44,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310595240] [2021-10-13 00:21:44,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310595240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:21:44,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:21:44,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2021-10-13 00:21:44,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504455738] [2021-10-13 00:21:44,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-13 00:21:44,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:21:44,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-13 00:21:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 00:21:44,186 INFO L87 Difference]: Start difference. First operand 422 states and 422 transitions. Second operand has 38 states, 38 states have (on average 10.973684210526315) internal successors, (417), 37 states have internal predecessors, (417), 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 00:21:44,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:21:44,883 INFO L93 Difference]: Finished difference Result 444 states and 444 transitions. [2021-10-13 00:21:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-13 00:21:44,884 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 10.973684210526315) internal successors, (417), 37 states have internal predecessors, (417), 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 417 [2021-10-13 00:21:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:21:44,886 INFO L225 Difference]: With dead ends: 444 [2021-10-13 00:21:44,886 INFO L226 Difference]: Without dead ends: 434 [2021-10-13 00:21:44,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1077.1ms TimeCoverageRelationStatistics Valid=1926, Invalid=3186, Unknown=0, NotChecked=0, Total=5112 [2021-10-13 00:21:44,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-10-13 00:21:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2021-10-13 00:21:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 432 states have (on average 1.0046296296296295) internal successors, (434), 433 states have internal predecessors, (434), 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 00:21:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 434 transitions. [2021-10-13 00:21:44,956 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 434 transitions. Word has length 417 [2021-10-13 00:21:44,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:21:44,957 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 434 transitions. [2021-10-13 00:21:44,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.973684210526315) internal successors, (417), 37 states have internal predecessors, (417), 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 00:21:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 434 transitions. [2021-10-13 00:21:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-10-13 00:21:44,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:44,961 INFO L512 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:21:45,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:45,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 00:21:45,187 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:21:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1176425602, now seen corresponding path program 35 times [2021-10-13 00:21:45,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:45,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747319503] [2021-10-13 00:21:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:45,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:45,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:21:45,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428783830] [2021-10-13 00:21:45,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:21:45,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:45,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:45,223 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:21:45,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 00:22:03,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-10-13 00:22:03,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:22:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-13 00:22:03,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:22:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7210 backedges. 0 proven. 7210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:22:05,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:22:05,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747319503] [2021-10-13 00:22:05,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:22:05,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428783830] [2021-10-13 00:22:05,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428783830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:05,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:22:05,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-10-13 00:22:05,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715147582] [2021-10-13 00:22:05,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-13 00:22:05,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:22:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-13 00:22:05,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 00:22:05,470 INFO L87 Difference]: Start difference. First operand 434 states and 434 transitions. Second operand has 39 states, 39 states have (on average 11.0) internal successors, (429), 38 states have internal predecessors, (429), 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 00:22:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:22:06,178 INFO L93 Difference]: Finished difference Result 456 states and 456 transitions. [2021-10-13 00:22:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-13 00:22:06,184 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 11.0) internal successors, (429), 38 states have internal predecessors, (429), 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 429 [2021-10-13 00:22:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:22:06,186 INFO L225 Difference]: With dead ends: 456 [2021-10-13 00:22:06,186 INFO L226 Difference]: Without dead ends: 446 [2021-10-13 00:22:06,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1029.6ms TimeCoverageRelationStatistics Valid=2035, Invalid=3367, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 00:22:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-10-13 00:22:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-10-13 00:22:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.0045045045045045) internal successors, (446), 445 states have internal predecessors, (446), 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 00:22:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2021-10-13 00:22:06,245 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 429 [2021-10-13 00:22:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:22:06,245 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2021-10-13 00:22:06,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.0) internal successors, (429), 38 states have internal predecessors, (429), 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 00:22:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2021-10-13 00:22:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-10-13 00:22:06,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:22:06,249 INFO L512 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:06,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-13 00:22:06,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:06,486 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:22:06,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:06,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1988635510, now seen corresponding path program 36 times [2021-10-13 00:22:06,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:06,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740681995] [2021-10-13 00:22:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:06,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:06,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:22:06,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229513690] [2021-10-13 00:22:06,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:22:06,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:06,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:22:06,522 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:22:06,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 00:22:14,665 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-13 00:22:14,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:22:14,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-13 00:22:14,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:22:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7632 backedges. 0 proven. 7632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:22:16,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:22:16,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740681995] [2021-10-13 00:22:16,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:22:16,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229513690] [2021-10-13 00:22:16,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229513690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:16,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:22:16,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2021-10-13 00:22:16,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710770797] [2021-10-13 00:22:16,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-13 00:22:16,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:22:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-13 00:22:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 00:22:16,680 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand has 40 states, 40 states have (on average 11.025) internal successors, (441), 39 states have internal predecessors, (441), 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 00:22:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:22:17,668 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2021-10-13 00:22:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-13 00:22:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 11.025) internal successors, (441), 39 states have internal predecessors, (441), 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 441 [2021-10-13 00:22:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:22:17,671 INFO L225 Difference]: With dead ends: 468 [2021-10-13 00:22:17,671 INFO L226 Difference]: Without dead ends: 458 [2021-10-13 00:22:17,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1447.0ms TimeCoverageRelationStatistics Valid=2147, Invalid=3553, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 00:22:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-13 00:22:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2021-10-13 00:22:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 456 states have (on average 1.0043859649122806) internal successors, (458), 457 states have internal predecessors, (458), 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 00:22:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 458 transitions. [2021-10-13 00:22:17,730 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 458 transitions. Word has length 441 [2021-10-13 00:22:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:22:17,731 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 458 transitions. [2021-10-13 00:22:17,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 11.025) internal successors, (441), 39 states have internal predecessors, (441), 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 00:22:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 458 transitions. [2021-10-13 00:22:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-10-13 00:22:17,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:22:17,736 INFO L512 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:17,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-13 00:22:17,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:17,951 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:22:17,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:17,951 INFO L82 PathProgramCache]: Analyzing trace with hash 57215122, now seen corresponding path program 37 times [2021-10-13 00:22:17,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:17,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942638285] [2021-10-13 00:22:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:17,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:17,997 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:22:17,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871465171] [2021-10-13 00:22:17,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:22:17,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:17,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:22:17,999 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:22:18,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-13 00:22:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:21,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-13 00:22:21,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:22:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8066 backedges. 0 proven. 8066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:22:23,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:22:23,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942638285] [2021-10-13 00:22:23,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:22:23,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871465171] [2021-10-13 00:22:23,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871465171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:23,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:22:23,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2021-10-13 00:22:23,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628859780] [2021-10-13 00:22:23,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-13 00:22:23,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:22:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-13 00:22:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 00:22:23,579 INFO L87 Difference]: Start difference. First operand 458 states and 458 transitions. Second operand has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 40 states have internal predecessors, (453), 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 00:22:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:22:24,461 INFO L93 Difference]: Finished difference Result 480 states and 480 transitions. [2021-10-13 00:22:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-13 00:22:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 40 states have internal predecessors, (453), 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 453 [2021-10-13 00:22:24,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:22:24,464 INFO L225 Difference]: With dead ends: 480 [2021-10-13 00:22:24,464 INFO L226 Difference]: Without dead ends: 470 [2021-10-13 00:22:24,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 1244.5ms TimeCoverageRelationStatistics Valid=2262, Invalid=3744, Unknown=0, NotChecked=0, Total=6006 [2021-10-13 00:22:24,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-13 00:22:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-10-13 00:22:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 468 states have (on average 1.0042735042735043) internal successors, (470), 469 states have internal predecessors, (470), 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 00:22:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 470 transitions. [2021-10-13 00:22:24,558 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 470 transitions. Word has length 453 [2021-10-13 00:22:24,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:22:24,558 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 470 transitions. [2021-10-13 00:22:24,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.048780487804878) internal successors, (453), 40 states have internal predecessors, (453), 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 00:22:24,559 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 470 transitions. [2021-10-13 00:22:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-10-13 00:22:24,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:22:24,561 INFO L512 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:24,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-13 00:22:24,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:24,762 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:22:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash 759459994, now seen corresponding path program 38 times [2021-10-13 00:22:24,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:24,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373770379] [2021-10-13 00:22:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:24,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:24,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:22:24,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222832267] [2021-10-13 00:22:24,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:22:24,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:22:24,798 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:22:24,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-13 00:22:28,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:22:28,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:22:28,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-13 00:22:28,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:22:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8512 backedges. 0 proven. 8512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:22:30,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:22:30,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373770379] [2021-10-13 00:22:30,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:22:30,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222832267] [2021-10-13 00:22:30,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222832267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:30,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:22:30,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-10-13 00:22:30,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382530818] [2021-10-13 00:22:30,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-13 00:22:30,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:22:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-13 00:22:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 00:22:30,231 INFO L87 Difference]: Start difference. First operand 470 states and 470 transitions. Second operand has 42 states, 42 states have (on average 11.071428571428571) internal successors, (465), 41 states have internal predecessors, (465), 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 00:22:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:22:31,155 INFO L93 Difference]: Finished difference Result 492 states and 492 transitions. [2021-10-13 00:22:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-13 00:22:31,155 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 11.071428571428571) internal successors, (465), 41 states have internal predecessors, (465), 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 465 [2021-10-13 00:22:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:22:31,158 INFO L225 Difference]: With dead ends: 492 [2021-10-13 00:22:31,158 INFO L226 Difference]: Without dead ends: 482 [2021-10-13 00:22:31,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 1320.0ms TimeCoverageRelationStatistics Valid=2380, Invalid=3940, Unknown=0, NotChecked=0, Total=6320 [2021-10-13 00:22:31,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-13 00:22:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2021-10-13 00:22:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 480 states have (on average 1.0041666666666667) internal successors, (482), 481 states have internal predecessors, (482), 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 00:22:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2021-10-13 00:22:31,220 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 465 [2021-10-13 00:22:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:22:31,245 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2021-10-13 00:22:31,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.071428571428571) internal successors, (465), 41 states have internal predecessors, (465), 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 00:22:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2021-10-13 00:22:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-10-13 00:22:31,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:22:31,248 INFO L512 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:31,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-13 00:22:31,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-13 00:22:31,448 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:22:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:31,449 INFO L82 PathProgramCache]: Analyzing trace with hash 358354082, now seen corresponding path program 39 times [2021-10-13 00:22:31,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:31,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120148219] [2021-10-13 00:22:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:31,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:31,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:22:31,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871759664] [2021-10-13 00:22:31,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:22:31,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:31,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:22:31,484 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:22:31,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-13 00:22:35,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-10-13 00:22:35,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:22:35,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-13 00:22:35,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:22:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:22:38,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:22:38,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120148219] [2021-10-13 00:22:38,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:22:38,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871759664] [2021-10-13 00:22:38,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871759664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:38,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:22:38,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-10-13 00:22:38,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995091542] [2021-10-13 00:22:38,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-13 00:22:38,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:22:38,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-13 00:22:38,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 00:22:38,286 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand has 43 states, 43 states have (on average 11.093023255813954) internal successors, (477), 42 states have internal predecessors, (477), 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 00:22:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:22:39,240 INFO L93 Difference]: Finished difference Result 504 states and 504 transitions. [2021-10-13 00:22:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-13 00:22:39,241 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 11.093023255813954) internal successors, (477), 42 states have internal predecessors, (477), 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 477 [2021-10-13 00:22:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:22:39,243 INFO L225 Difference]: With dead ends: 504 [2021-10-13 00:22:39,243 INFO L226 Difference]: Without dead ends: 494 [2021-10-13 00:22:39,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 1573.7ms TimeCoverageRelationStatistics Valid=2501, Invalid=4141, Unknown=0, NotChecked=0, Total=6642 [2021-10-13 00:22:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-10-13 00:22:39,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2021-10-13 00:22:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 492 states have (on average 1.0040650406504066) internal successors, (494), 493 states have internal predecessors, (494), 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 00:22:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 494 transitions. [2021-10-13 00:22:39,341 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 494 transitions. Word has length 477 [2021-10-13 00:22:39,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:22:39,341 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 494 transitions. [2021-10-13 00:22:39,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.093023255813954) internal successors, (477), 42 states have internal predecessors, (477), 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 00:22:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 494 transitions. [2021-10-13 00:22:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2021-10-13 00:22:39,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:22:39,346 INFO L512 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:39,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-13 00:22:39,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 00:22:39,571 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:22:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:39,571 INFO L82 PathProgramCache]: Analyzing trace with hash -553526102, now seen corresponding path program 40 times [2021-10-13 00:22:39,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:39,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888664057] [2021-10-13 00:22:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:39,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:39,608 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:22:39,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127444379] [2021-10-13 00:22:39,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:22:39,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:39,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:22:39,609 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:22:39,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-13 00:22:43,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:22:43,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:22:43,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-13 00:22:43,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:22:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9440 backedges. 0 proven. 9440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:22:46,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:22:46,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888664057] [2021-10-13 00:22:46,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:22:46,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127444379] [2021-10-13 00:22:46,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127444379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:22:46,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:22:46,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2021-10-13 00:22:46,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227371243] [2021-10-13 00:22:46,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-13 00:22:46,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:22:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-13 00:22:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 00:22:46,163 INFO L87 Difference]: Start difference. First operand 494 states and 494 transitions. Second operand has 44 states, 44 states have (on average 11.113636363636363) internal successors, (489), 43 states have internal predecessors, (489), 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 00:22:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:22:47,586 INFO L93 Difference]: Finished difference Result 516 states and 516 transitions. [2021-10-13 00:22:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-13 00:22:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 11.113636363636363) internal successors, (489), 43 states have internal predecessors, (489), 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 489 [2021-10-13 00:22:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:22:47,589 INFO L225 Difference]: With dead ends: 516 [2021-10-13 00:22:47,590 INFO L226 Difference]: Without dead ends: 506 [2021-10-13 00:22:47,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1815.5ms TimeCoverageRelationStatistics Valid=2625, Invalid=4347, Unknown=0, NotChecked=0, Total=6972 [2021-10-13 00:22:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-13 00:22:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-10-13 00:22:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 504 states have (on average 1.003968253968254) internal successors, (506), 505 states have internal predecessors, (506), 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 00:22:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 506 transitions. [2021-10-13 00:22:47,676 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 506 transitions. Word has length 489 [2021-10-13 00:22:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:22:47,677 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 506 transitions. [2021-10-13 00:22:47,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 11.113636363636363) internal successors, (489), 43 states have internal predecessors, (489), 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 00:22:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 506 transitions. [2021-10-13 00:22:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-10-13 00:22:47,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:22:47,681 INFO L512 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:47,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-13 00:22:47,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 00:22:47,903 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:22:47,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:47,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1116201138, now seen corresponding path program 41 times [2021-10-13 00:22:47,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:22:47,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042580324] [2021-10-13 00:22:47,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:47,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:22:47,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:22:47,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873859570] [2021-10-13 00:22:47,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:22:47,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:22:48,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:22:48,001 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:22:48,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-13 00:23:06,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-10-13 00:23:06,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:23:06,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-13 00:23:06,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:23:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9922 backedges. 0 proven. 9922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:23:09,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:23:09,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042580324] [2021-10-13 00:23:09,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:23:09,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873859570] [2021-10-13 00:23:09,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873859570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:23:09,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:23:09,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2021-10-13 00:23:09,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008171738] [2021-10-13 00:23:09,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-13 00:23:09,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:23:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-13 00:23:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-10-13 00:23:09,032 INFO L87 Difference]: Start difference. First operand 506 states and 506 transitions. Second operand has 45 states, 45 states have (on average 11.133333333333333) internal successors, (501), 44 states have internal predecessors, (501), 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 00:23:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:23:10,226 INFO L93 Difference]: Finished difference Result 528 states and 528 transitions. [2021-10-13 00:23:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-13 00:23:10,227 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 11.133333333333333) internal successors, (501), 44 states have internal predecessors, (501), 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 501 [2021-10-13 00:23:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:23:10,230 INFO L225 Difference]: With dead ends: 528 [2021-10-13 00:23:10,230 INFO L226 Difference]: Without dead ends: 518 [2021-10-13 00:23:10,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1814.9ms TimeCoverageRelationStatistics Valid=2752, Invalid=4558, Unknown=0, NotChecked=0, Total=7310 [2021-10-13 00:23:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-10-13 00:23:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2021-10-13 00:23:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 516 states have (on average 1.003875968992248) internal successors, (518), 517 states have internal predecessors, (518), 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 00:23:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2021-10-13 00:23:10,292 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 501 [2021-10-13 00:23:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:23:10,293 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2021-10-13 00:23:10,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 11.133333333333333) internal successors, (501), 44 states have internal predecessors, (501), 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 00:23:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2021-10-13 00:23:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-10-13 00:23:10,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:23:10,296 INFO L512 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:23:10,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-13 00:23:10,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-13 00:23:10,497 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:23:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:23:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash 222304442, now seen corresponding path program 42 times [2021-10-13 00:23:10,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:23:10,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734729838] [2021-10-13 00:23:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:23:10,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:23:10,629 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:23:10,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937083742] [2021-10-13 00:23:10,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:23:10,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:10,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:23:10,631 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:23:10,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-13 00:23:20,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-13 00:23:20,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:23:20,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-13 00:23:20,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:23:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10416 backedges. 0 proven. 10416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:23:23,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:23:23,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734729838] [2021-10-13 00:23:23,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:23:23,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937083742] [2021-10-13 00:23:23,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937083742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:23:23,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:23:23,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2021-10-13 00:23:23,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526349407] [2021-10-13 00:23:23,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-13 00:23:23,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:23:23,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-13 00:23:23,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 00:23:23,343 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand has 46 states, 46 states have (on average 11.152173913043478) internal successors, (513), 45 states have internal predecessors, (513), 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 00:23:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:23:24,546 INFO L93 Difference]: Finished difference Result 540 states and 540 transitions. [2021-10-13 00:23:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-13 00:23:24,547 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 11.152173913043478) internal successors, (513), 45 states have internal predecessors, (513), 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 513 [2021-10-13 00:23:24,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:23:24,549 INFO L225 Difference]: With dead ends: 540 [2021-10-13 00:23:24,550 INFO L226 Difference]: Without dead ends: 530 [2021-10-13 00:23:24,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1793.0ms TimeCoverageRelationStatistics Valid=2882, Invalid=4774, Unknown=0, NotChecked=0, Total=7656 [2021-10-13 00:23:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-13 00:23:24,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2021-10-13 00:23:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 528 states have (on average 1.003787878787879) internal successors, (530), 529 states have internal predecessors, (530), 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 00:23:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 530 transitions. [2021-10-13 00:23:24,622 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 530 transitions. Word has length 513 [2021-10-13 00:23:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:23:24,623 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 530 transitions. [2021-10-13 00:23:24,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 11.152173913043478) internal successors, (513), 45 states have internal predecessors, (513), 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 00:23:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 530 transitions. [2021-10-13 00:23:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2021-10-13 00:23:24,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:23:24,626 INFO L512 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:23:24,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-13 00:23:24,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:24,827 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:23:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:23:24,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1585675070, now seen corresponding path program 43 times [2021-10-13 00:23:24,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:23:24,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103654595] [2021-10-13 00:23:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:23:24,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:23:24,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:23:24,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251799793] [2021-10-13 00:23:24,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:23:24,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:24,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:23:24,925 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:23:24,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-13 00:23:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:23:29,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-13 00:23:29,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:23:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10922 backedges. 0 proven. 10922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:23:32,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:23:32,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103654595] [2021-10-13 00:23:32,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:23:32,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251799793] [2021-10-13 00:23:32,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251799793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:23:32,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:23:32,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-10-13 00:23:32,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509485144] [2021-10-13 00:23:32,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-13 00:23:32,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:23:32,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-13 00:23:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 00:23:32,496 INFO L87 Difference]: Start difference. First operand 530 states and 530 transitions. Second operand has 47 states, 47 states have (on average 11.170212765957446) internal successors, (525), 46 states have internal predecessors, (525), 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 00:23:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:23:33,994 INFO L93 Difference]: Finished difference Result 552 states and 552 transitions. [2021-10-13 00:23:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-13 00:23:33,995 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 11.170212765957446) internal successors, (525), 46 states have internal predecessors, (525), 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 525 [2021-10-13 00:23:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:23:33,998 INFO L225 Difference]: With dead ends: 552 [2021-10-13 00:23:33,998 INFO L226 Difference]: Without dead ends: 542 [2021-10-13 00:23:33,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 2060.5ms TimeCoverageRelationStatistics Valid=3015, Invalid=4995, Unknown=0, NotChecked=0, Total=8010 [2021-10-13 00:23:33,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-13 00:23:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2021-10-13 00:23:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 540 states have (on average 1.0037037037037038) internal successors, (542), 541 states have internal predecessors, (542), 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 00:23:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 542 transitions. [2021-10-13 00:23:34,099 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 542 transitions. Word has length 525 [2021-10-13 00:23:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:23:34,100 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 542 transitions. [2021-10-13 00:23:34,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 11.170212765957446) internal successors, (525), 46 states have internal predecessors, (525), 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 00:23:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 542 transitions. [2021-10-13 00:23:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2021-10-13 00:23:34,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:23:34,104 INFO L512 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:23:34,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-13 00:23:34,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-13 00:23:34,304 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:23:34,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:23:34,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1989092554, now seen corresponding path program 44 times [2021-10-13 00:23:34,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:23:34,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912404890] [2021-10-13 00:23:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:23:34,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:23:34,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:23:34,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516672480] [2021-10-13 00:23:34,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:23:34,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:34,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:23:34,351 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:23:34,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 00:23:39,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:23:39,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:23:39,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-13 00:23:39,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:23:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 11440 backedges. 0 proven. 11440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:23:41,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:23:41,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912404890] [2021-10-13 00:23:41,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:23:41,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516672480] [2021-10-13 00:23:41,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516672480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:23:41,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:23:41,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2021-10-13 00:23:41,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220991354] [2021-10-13 00:23:41,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-13 00:23:41,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:23:41,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-13 00:23:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 00:23:41,909 INFO L87 Difference]: Start difference. First operand 542 states and 542 transitions. Second operand has 48 states, 48 states have (on average 11.1875) internal successors, (537), 47 states have internal predecessors, (537), 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 00:23:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:23:43,293 INFO L93 Difference]: Finished difference Result 564 states and 564 transitions. [2021-10-13 00:23:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-13 00:23:43,294 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 11.1875) internal successors, (537), 47 states have internal predecessors, (537), 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 537 [2021-10-13 00:23:43,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:23:43,297 INFO L225 Difference]: With dead ends: 564 [2021-10-13 00:23:43,297 INFO L226 Difference]: Without dead ends: 554 [2021-10-13 00:23:43,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1998.8ms TimeCoverageRelationStatistics Valid=3151, Invalid=5221, Unknown=0, NotChecked=0, Total=8372 [2021-10-13 00:23:43,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-13 00:23:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2021-10-13 00:23:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 552 states have (on average 1.0036231884057971) internal successors, (554), 553 states have internal predecessors, (554), 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 00:23:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 554 transitions. [2021-10-13 00:23:43,378 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 554 transitions. Word has length 537 [2021-10-13 00:23:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:23:43,379 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 554 transitions. [2021-10-13 00:23:43,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 11.1875) internal successors, (537), 47 states have internal predecessors, (537), 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 00:23:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 554 transitions. [2021-10-13 00:23:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2021-10-13 00:23:43,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:23:43,383 INFO L512 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:23:43,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-13 00:23:43,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:43,584 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:23:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:23:43,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1731594030, now seen corresponding path program 45 times [2021-10-13 00:23:43,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:23:43,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254551499] [2021-10-13 00:23:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:23:43,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:23:43,657 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:23:43,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856105256] [2021-10-13 00:23:43,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:23:43,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:23:43,659 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:23:43,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 00:23:50,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-10-13 00:23:50,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:23:50,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-13 00:23:50,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:23:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 0 proven. 11970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:23:52,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:23:52,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254551499] [2021-10-13 00:23:52,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:23:52,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856105256] [2021-10-13 00:23:52,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856105256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:23:52,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:23:52,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2021-10-13 00:23:52,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188828062] [2021-10-13 00:23:52,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-13 00:23:52,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:23:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-13 00:23:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 00:23:52,693 INFO L87 Difference]: Start difference. First operand 554 states and 554 transitions. Second operand has 49 states, 49 states have (on average 11.204081632653061) internal successors, (549), 48 states have internal predecessors, (549), 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 00:23:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:23:54,080 INFO L93 Difference]: Finished difference Result 576 states and 576 transitions. [2021-10-13 00:23:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-13 00:23:54,080 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 11.204081632653061) internal successors, (549), 48 states have internal predecessors, (549), 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 549 [2021-10-13 00:23:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:23:54,083 INFO L225 Difference]: With dead ends: 576 [2021-10-13 00:23:54,083 INFO L226 Difference]: Without dead ends: 566 [2021-10-13 00:23:54,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2072.8ms TimeCoverageRelationStatistics Valid=3290, Invalid=5452, Unknown=0, NotChecked=0, Total=8742 [2021-10-13 00:23:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-13 00:23:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2021-10-13 00:23:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 564 states have (on average 1.00354609929078) internal successors, (566), 565 states have internal predecessors, (566), 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 00:23:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 566 transitions. [2021-10-13 00:23:54,161 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 566 transitions. Word has length 549 [2021-10-13 00:23:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:23:54,161 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 566 transitions. [2021-10-13 00:23:54,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 11.204081632653061) internal successors, (549), 48 states have internal predecessors, (549), 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 00:23:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 566 transitions. [2021-10-13 00:23:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2021-10-13 00:23:54,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:23:54,166 INFO L512 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:23:54,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 00:23:54,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:54,366 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:23:54,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:23:54,367 INFO L82 PathProgramCache]: Analyzing trace with hash 696189146, now seen corresponding path program 46 times [2021-10-13 00:23:54,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:23:54,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575896156] [2021-10-13 00:23:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:23:54,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:23:54,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:23:54,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093890018] [2021-10-13 00:23:54,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:23:54,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:23:54,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:23:54,461 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:23:54,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 00:24:00,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:24:00,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:00,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-13 00:24:00,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12512 backedges. 0 proven. 12512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:03,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:03,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575896156] [2021-10-13 00:24:03,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:03,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093890018] [2021-10-13 00:24:03,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093890018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:03,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:03,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2021-10-13 00:24:03,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101442923] [2021-10-13 00:24:03,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-13 00:24:03,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-13 00:24:03,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 00:24:03,396 INFO L87 Difference]: Start difference. First operand 566 states and 566 transitions. Second operand has 50 states, 50 states have (on average 11.22) internal successors, (561), 49 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:04,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:04,839 INFO L93 Difference]: Finished difference Result 588 states and 588 transitions. [2021-10-13 00:24:04,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-13 00:24:04,840 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 11.22) internal successors, (561), 49 states have internal predecessors, (561), 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 561 [2021-10-13 00:24:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:04,843 INFO L225 Difference]: With dead ends: 588 [2021-10-13 00:24:04,843 INFO L226 Difference]: Without dead ends: 578 [2021-10-13 00:24:04,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2210.3ms TimeCoverageRelationStatistics Valid=3432, Invalid=5688, Unknown=0, NotChecked=0, Total=9120 [2021-10-13 00:24:04,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-10-13 00:24:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2021-10-13 00:24:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 576 states have (on average 1.0034722222222223) internal successors, (578), 577 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 578 transitions. [2021-10-13 00:24:04,920 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 578 transitions. Word has length 561 [2021-10-13 00:24:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:04,920 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 578 transitions. [2021-10-13 00:24:04,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 11.22) internal successors, (561), 49 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 578 transitions. [2021-10-13 00:24:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2021-10-13 00:24:04,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:04,925 INFO L512 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:04,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:05,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:05,126 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:24:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:05,127 INFO L82 PathProgramCache]: Analyzing trace with hash -553632542, now seen corresponding path program 47 times [2021-10-13 00:24:05,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:05,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850216138] [2021-10-13 00:24:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:05,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:05,207 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:05,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989941392] [2021-10-13 00:24:05,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:24:05,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:05,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:05,216 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:05,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 00:24:20,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-10-13 00:24:20,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:20,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1893 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-13 00:24:20,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13066 backedges. 0 proven. 13066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:23,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:23,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850216138] [2021-10-13 00:24:23,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:23,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989941392] [2021-10-13 00:24:23,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989941392] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:23,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:23,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-10-13 00:24:23,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858587934] [2021-10-13 00:24:23,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-13 00:24:23,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:23,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-13 00:24:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 00:24:23,022 INFO L87 Difference]: Start difference. First operand 578 states and 578 transitions. Second operand has 51 states, 51 states have (on average 11.235294117647058) internal successors, (573), 50 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:24,501 INFO L93 Difference]: Finished difference Result 600 states and 600 transitions. [2021-10-13 00:24:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-13 00:24:24,501 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 11.235294117647058) internal successors, (573), 50 states have internal predecessors, (573), 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 573 [2021-10-13 00:24:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:24,504 INFO L225 Difference]: With dead ends: 600 [2021-10-13 00:24:24,505 INFO L226 Difference]: Without dead ends: 590 [2021-10-13 00:24:24,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 2228.6ms TimeCoverageRelationStatistics Valid=3577, Invalid=5929, Unknown=0, NotChecked=0, Total=9506 [2021-10-13 00:24:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-13 00:24:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2021-10-13 00:24:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 588 states have (on average 1.0034013605442176) internal successors, (590), 589 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 590 transitions. [2021-10-13 00:24:24,585 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 590 transitions. Word has length 573 [2021-10-13 00:24:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:24,585 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 590 transitions. [2021-10-13 00:24:24,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 11.235294117647058) internal successors, (573), 50 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 590 transitions. [2021-10-13 00:24:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2021-10-13 00:24:24,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:24,590 INFO L512 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:24,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:24,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-10-13 00:24:24,790 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:24:24,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:24,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2069910294, now seen corresponding path program 48 times [2021-10-13 00:24:24,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:24,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223037367] [2021-10-13 00:24:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:24,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:24,929 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:24,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183872762] [2021-10-13 00:24:24,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:24:24,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:24,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:24,937 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:24,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 00:24:40,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-13 00:24:40,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:40,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-13 00:24:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13632 backedges. 0 proven. 13632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:42,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:42,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223037367] [2021-10-13 00:24:42,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:42,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183872762] [2021-10-13 00:24:42,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183872762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:42,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:42,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-10-13 00:24:42,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858024133] [2021-10-13 00:24:42,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-13 00:24:42,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-13 00:24:42,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 00:24:42,904 INFO L87 Difference]: Start difference. First operand 590 states and 590 transitions. Second operand has 52 states, 52 states have (on average 11.25) internal successors, (585), 51 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:44,416 INFO L93 Difference]: Finished difference Result 612 states and 612 transitions. [2021-10-13 00:24:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-13 00:24:44,417 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 11.25) internal successors, (585), 51 states have internal predecessors, (585), 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 585 [2021-10-13 00:24:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:44,420 INFO L225 Difference]: With dead ends: 612 [2021-10-13 00:24:44,421 INFO L226 Difference]: Without dead ends: 602 [2021-10-13 00:24:44,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2168.8ms TimeCoverageRelationStatistics Valid=3725, Invalid=6175, Unknown=0, NotChecked=0, Total=9900 [2021-10-13 00:24:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-13 00:24:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-10-13 00:24:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 600 states have (on average 1.0033333333333334) internal successors, (602), 601 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:44,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 602 transitions. [2021-10-13 00:24:44,505 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 602 transitions. Word has length 585 [2021-10-13 00:24:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:44,505 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 602 transitions. [2021-10-13 00:24:44,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 11.25) internal successors, (585), 51 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 602 transitions. [2021-10-13 00:24:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-10-13 00:24:44,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:44,510 INFO L512 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:44,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:44,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-10-13 00:24:44,711 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:24:44,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:44,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2058309874, now seen corresponding path program 49 times [2021-10-13 00:24:44,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:44,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059873236] [2021-10-13 00:24:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:44,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:44,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:44,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445109964] [2021-10-13 00:24:44,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:24:44,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:44,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:44,764 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:44,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 00:24:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:50,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-13 00:24:50,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14210 backedges. 0 proven. 14210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:53,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:53,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059873236] [2021-10-13 00:24:53,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:24:53,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445109964] [2021-10-13 00:24:53,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445109964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:53,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:24:53,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-10-13 00:24:53,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399679269] [2021-10-13 00:24:53,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-13 00:24:53,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-13 00:24:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 00:24:53,324 INFO L87 Difference]: Start difference. First operand 602 states and 602 transitions. Second operand has 53 states, 53 states have (on average 11.264150943396226) internal successors, (597), 52 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:54,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:54,947 INFO L93 Difference]: Finished difference Result 624 states and 624 transitions. [2021-10-13 00:24:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-13 00:24:54,948 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 11.264150943396226) internal successors, (597), 52 states have internal predecessors, (597), 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 597 [2021-10-13 00:24:54,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:54,951 INFO L225 Difference]: With dead ends: 624 [2021-10-13 00:24:54,951 INFO L226 Difference]: Without dead ends: 614 [2021-10-13 00:24:54,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2340.3ms TimeCoverageRelationStatistics Valid=3876, Invalid=6426, Unknown=0, NotChecked=0, Total=10302 [2021-10-13 00:24:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-10-13 00:24:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2021-10-13 00:24:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 612 states have (on average 1.0032679738562091) internal successors, (614), 613 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 614 transitions. [2021-10-13 00:24:55,050 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 614 transitions. Word has length 597 [2021-10-13 00:24:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:55,051 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 614 transitions. [2021-10-13 00:24:55,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.264150943396226) internal successors, (597), 52 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 614 transitions. [2021-10-13 00:24:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-10-13 00:24:55,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:55,056 INFO L512 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:55,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:55,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:55,259 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-13 00:24:55,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash 914434298, now seen corresponding path program 50 times [2021-10-13 00:24:55,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:55,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102389149] [2021-10-13 00:24:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:55,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:55,316 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:24:55,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117444209] [2021-10-13 00:24:55,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:24:55,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:55,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:55,317 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:55,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 00:25:01,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:25:01,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-13 00:25:01,434 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:25:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:25:02,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:25:02,016 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:25:02,018 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:25:02,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-13 00:25:02,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:25:02,232 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:25:02,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:25:02 BoogieIcfgContainer [2021-10-13 00:25:02,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:25:02,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:25:02,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:25:02,582 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:25:02,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:13:54" (3/4) ... [2021-10-13 00:25:02,587 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:25:03,042 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:25:03,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:25:03,045 INFO L168 Benchmark]: Toolchain (without parser) took 669238.34 ms. Allocated memory was 88.1 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 54.0 MB in the beginning and 1.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2021-10-13 00:25:03,046 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 60.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:25:03,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.23 ms. Allocated memory is still 88.1 MB. Free memory was 53.8 MB in the beginning and 63.8 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:25:03,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.44 ms. Allocated memory is still 88.1 MB. Free memory was 63.8 MB in the beginning and 62.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:25:03,048 INFO L168 Benchmark]: Boogie Preprocessor took 55.00 ms. Allocated memory is still 88.1 MB. Free memory was 62.2 MB in the beginning and 60.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:25:03,048 INFO L168 Benchmark]: RCFGBuilder took 474.12 ms. Allocated memory is still 88.1 MB. Free memory was 60.8 MB in the beginning and 49.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:25:03,049 INFO L168 Benchmark]: TraceAbstraction took 667800.43 ms. Allocated memory was 88.1 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 49.2 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.0 GB. Max. memory is 16.1 GB. [2021-10-13 00:25:03,050 INFO L168 Benchmark]: Witness Printer took 461.42 ms. Allocated memory is still 2.2 GB. Free memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: -342.3 MB). Peak memory consumption was 131.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:25:03,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 60.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.23 ms. Allocated memory is still 88.1 MB. Free memory was 53.8 MB in the beginning and 63.8 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.44 ms. Allocated memory is still 88.1 MB. Free memory was 63.8 MB in the beginning and 62.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.00 ms. Allocated memory is still 88.1 MB. Free memory was 62.2 MB in the beginning and 60.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 474.12 ms. Allocated memory is still 88.1 MB. Free memory was 60.8 MB in the beginning and 49.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 667800.43 ms. Allocated memory was 88.1 MB in the beginning and 2.2 GB in the end (delta: 2.1 GB). Free memory was 49.2 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.0 GB. Max. memory is 16.1 GB. * Witness Printer took 461.42 ms. Allocated memory is still 2.2 GB. Free memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: -342.3 MB). Peak memory consumption was 131.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=3] [L33] EXPR counter++ VAL [counter=4] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=4] [L33] EXPR counter++ VAL [counter=5] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=5] [L33] EXPR counter++ VAL [counter=6] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=6] [L33] EXPR counter++ VAL [counter=7] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=7] [L33] EXPR counter++ VAL [counter=8] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=8] [L33] EXPR counter++ VAL [counter=9] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=9] [L33] EXPR counter++ VAL [counter=10] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=10] [L33] EXPR counter++ VAL [counter=11] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=11] [L33] EXPR counter++ VAL [counter=12] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=12] [L33] EXPR counter++ VAL [counter=13] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=13] [L33] EXPR counter++ VAL [counter=14] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=14] [L33] EXPR counter++ VAL [counter=15] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=15] [L33] EXPR counter++ VAL [counter=16] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=16] [L33] EXPR counter++ VAL [counter=17] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=17] [L33] EXPR counter++ VAL [counter=18] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=18] [L33] EXPR counter++ VAL [counter=19] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=19] [L33] EXPR counter++ VAL [counter=20] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=20] [L33] EXPR counter++ VAL [counter=21] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=21] [L33] EXPR counter++ VAL [counter=22] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=22] [L33] EXPR counter++ VAL [counter=23] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=23] [L33] EXPR counter++ VAL [counter=24] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=24] [L33] EXPR counter++ VAL [counter=25] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=25] [L33] EXPR counter++ VAL [counter=26] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=26] [L33] EXPR counter++ VAL [counter=27] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=27] [L33] EXPR counter++ VAL [counter=28] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=28] [L33] EXPR counter++ VAL [counter=29] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=29] [L33] EXPR counter++ VAL [counter=30] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=30] [L33] EXPR counter++ VAL [counter=31] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=31] [L33] EXPR counter++ VAL [counter=32] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=32] [L33] EXPR counter++ VAL [counter=33] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=33] [L33] EXPR counter++ VAL [counter=34] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=34] [L33] EXPR counter++ VAL [counter=35] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=35] [L33] EXPR counter++ VAL [counter=36] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=36] [L33] EXPR counter++ VAL [counter=37] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=37] [L33] EXPR counter++ VAL [counter=38] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=38] [L33] EXPR counter++ VAL [counter=39] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=39] [L33] EXPR counter++ VAL [counter=40] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=40] [L33] EXPR counter++ VAL [counter=41] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=41] [L33] EXPR counter++ VAL [counter=42] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=42] [L33] EXPR counter++ VAL [counter=43] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=43] [L33] EXPR counter++ VAL [counter=44] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=44] [L33] EXPR counter++ VAL [counter=45] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=45] [L33] EXPR counter++ VAL [counter=46] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=46] [L33] EXPR counter++ VAL [counter=47] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=47] [L33] EXPR counter++ VAL [counter=48] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=48] [L33] EXPR counter++ VAL [counter=49] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=49] [L33] EXPR counter++ VAL [counter=50] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=50] [L33] EXPR counter++ VAL [counter=51] [L33] COND FALSE !(counter++<50) [L15] COND FALSE !(!(cond)) VAL [counter=51] [L15] COND TRUE !(cond) VAL [counter=51] [L17] reach_error() VAL [counter=51] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 667332.5ms, OverallIterations: 66, TraceHistogramMax: 51, EmptinessCheckTime: 147.2ms, AutomataDifference: 249789.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1597 SDtfs, 896 SDslu, 16846 SDs, 0 SdLazy, 4565 SolverSat, 554 SolverUnsat, 64 SolverUnknown, 0 SolverNotchecked, 198936.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16772 GetRequests, 14098 SyntacticMatches, 7 SemanticMatches, 2667 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20992 ImplicationChecksByTransitivity, 129974.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=65, InterpolantAutomatonStates: 2755, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2840.6ms AutomataMinimizationTime, 65 MinimizatonAttempts, 220 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1640.0ms SsaConstructionTime, 126671.2ms SatisfiabilityAnalysisTime, 151129.7ms InterpolantComputationTime, 16170 NumberOfCodeBlocks, 16098 NumberOfCodeBlocksAsserted, 703 NumberOfCheckSat, 15496 ConstructedInterpolants, 0 QuantifiedInterpolants, 52825 SizeOfPredicates, 1322 NumberOfNonLiveVariables, 52268 ConjunctsInSsa, 2889 ConjunctsInUnsatCore, 65 InterpolantComputations, 7 PerfectInterpolantSequences, 136/237917 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:25:03,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8c0ddc-209e-47b9-be07-1d1d752da159/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...