./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.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_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/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_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/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_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/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 a0a2e9e6948695d7aa90a7d2948ec209dec0a274 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:49:45,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:49:45,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:49:45,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:49:45,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:49:45,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:49:45,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:49:45,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:49:45,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:49:45,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:49:45,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:49:45,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:49:45,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:49:45,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:49:45,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:49:45,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:49:45,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:49:45,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:49:45,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:49:45,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:49:45,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:49:45,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:49:45,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:49:45,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:49:45,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:49:45,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:49:45,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:49:45,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:49:45,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:49:45,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:49:45,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:49:45,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:49:45,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:49:45,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:49:45,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:49:45,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:49:45,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:49:45,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:49:45,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:49:45,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:49:45,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:49:45,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:49:45,469 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:49:45,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:49:45,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:49:45,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:49:45,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:49:45,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:49:45,473 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:49:45,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:49:45,474 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:49:45,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:49:45,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:49:45,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:49:45,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:49:45,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:49:45,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:49:45,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:49:45,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:49:45,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:49:45,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:49:45,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:49:45,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:49:45,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:49:45,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:49:45,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:49:45,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:49:45,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:49:45,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:49:45,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:49:45,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:49:45,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:49:45,483 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_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a2e9e6948695d7aa90a7d2948ec209dec0a274 [2021-10-13 00:49:45,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:49:45,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:49:45,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:49:45,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:49:45,838 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:49:45,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2021-10-13 00:49:45,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/data/30d12d7e4/3ba0557c38eb40d8917428c26a6eacf2/FLAGbbcb1fe0c [2021-10-13 00:49:46,537 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:49:46,538 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2021-10-13 00:49:46,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/data/30d12d7e4/3ba0557c38eb40d8917428c26a6eacf2/FLAGbbcb1fe0c [2021-10-13 00:49:46,821 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/data/30d12d7e4/3ba0557c38eb40d8917428c26a6eacf2 [2021-10-13 00:49:46,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:49:46,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:49:46,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:49:46,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:49:46,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:49:46,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:49:46" (1/1) ... [2021-10-13 00:49:46,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a02099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:46, skipping insertion in model container [2021-10-13 00:49:46,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:49:46" (1/1) ... [2021-10-13 00:49:46,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:49:46,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:49:47,042 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_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c[576,589] [2021-10-13 00:49:47,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:49:47,102 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:49:47,133 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_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c[576,589] [2021-10-13 00:49:47,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:49:47,190 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:49:47,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47 WrapperNode [2021-10-13 00:49:47,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:49:47,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:49:47,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:49:47,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:49:47,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:49:47,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:49:47,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:49:47,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:49:47,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:49:47,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:49:47,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:49:47,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:49:47,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (1/1) ... [2021-10-13 00:49:47,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:49:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:47,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:49:47,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:49:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:49:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:49:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:49:47,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:49:47,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:49:47,667 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 00:49:47,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:49:47 BoogieIcfgContainer [2021-10-13 00:49:47,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:49:47,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:49:47,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:49:47,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:49:47,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:49:46" (1/3) ... [2021-10-13 00:49:47,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc442ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:49:47, skipping insertion in model container [2021-10-13 00:49:47,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:49:47" (2/3) ... [2021-10-13 00:49:47,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc442ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:49:47, skipping insertion in model container [2021-10-13 00:49:47,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:49:47" (3/3) ... [2021-10-13 00:49:47,705 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound5.c [2021-10-13 00:49:47,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:49:47,712 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 00:49:47,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:49:47,805 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 00:49:47,805 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 00:49:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:49:47,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:47,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:47,852 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:47,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:47,859 INFO L82 PathProgramCache]: Analyzing trace with hash 122367883, now seen corresponding path program 1 times [2021-10-13 00:49:47,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:47,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111992840] [2021-10-13 00:49:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:47,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:48,037 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 00:49:48,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:48,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111992840] [2021-10-13 00:49:48,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111992840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:48,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:48,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:49:48,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14550678] [2021-10-13 00:49:48,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:49:48,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:49:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:49:48,068 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:48,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:48,092 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2021-10-13 00:49:48,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:49:48,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:49:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:48,104 INFO L225 Difference]: With dead ends: 79 [2021-10-13 00:49:48,104 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 00:49:48,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:49:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 00:49:48,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-13 00:49:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 36 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 00:49:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-10-13 00:49:48,147 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2021-10-13 00:49:48,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:48,148 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-10-13 00:49:48,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-10-13 00:49:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:49:48,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:48,149 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:48,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:49:48,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:48,152 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-10-13 00:49:48,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:48,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262233761] [2021-10-13 00:49:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:48,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:48,179 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:48,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137392748] [2021-10-13 00:49:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:48,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:48,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:48,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:48,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:49:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:48,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:49:48,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:48,590 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 00:49:48,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:48,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262233761] [2021-10-13 00:49:48,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:48,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137392748] [2021-10-13 00:49:48,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137392748] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:48,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:48,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:49:48,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223869590] [2021-10-13 00:49:48,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:49:48,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:48,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:49:48,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:49:48,597 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 00:49:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:48,773 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-13 00:49:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:49:48,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 00:49:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:48,776 INFO L225 Difference]: With dead ends: 51 [2021-10-13 00:49:48,776 INFO L226 Difference]: Without dead ends: 49 [2021-10-13 00:49:48,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:49:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-13 00:49:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-10-13 00:49:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-10-13 00:49:48,788 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2021-10-13 00:49:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:48,789 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-10-13 00:49:48,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 00:49:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-10-13 00:49:48,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:49:48,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:48,791 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:48,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:49,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:49,004 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:49,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1182906761, now seen corresponding path program 1 times [2021-10-13 00:49:49,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:49,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289986788] [2021-10-13 00:49:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:49,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:49,042 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:49,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414586036] [2021-10-13 00:49:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:49,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:49,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:49,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:49,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:49:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:49,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:49:49,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:49,214 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 00:49:49,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:49,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289986788] [2021-10-13 00:49:49,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:49,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414586036] [2021-10-13 00:49:49,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414586036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:49,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:49,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:49:49,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355336965] [2021-10-13 00:49:49,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:49:49,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:49,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:49:49,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:49:49,227 INFO L87 Difference]: Start difference. First operand 40 states and 44 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 00:49:49,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:49,261 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-13 00:49:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:49:49,263 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 00:49:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:49,265 INFO L225 Difference]: With dead ends: 44 [2021-10-13 00:49:49,265 INFO L226 Difference]: Without dead ends: 40 [2021-10-13 00:49:49,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:49:49,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-13 00:49:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-13 00:49:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.303030303030303) internal successors, (43), 39 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 00:49:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-13 00:49:49,284 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2021-10-13 00:49:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:49,285 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-13 00:49:49,285 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 00:49:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-13 00:49:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:49:49,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:49,286 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:49,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:49,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:49,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:49,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-10-13 00:49:49,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:49,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148812013] [2021-10-13 00:49:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:49,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:49,541 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:49,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172614900] [2021-10-13 00:49:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:49,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:49,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:49,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:49,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:49:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:49,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:49:49,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:49,861 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 00:49:49,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:49,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148812013] [2021-10-13 00:49:49,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:49,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172614900] [2021-10-13 00:49:49,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172614900] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:49,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:49,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:49:49,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576515775] [2021-10-13 00:49:49,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:49:49,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:49,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:49:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:49:49,871 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 00:49:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:50,085 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-10-13 00:49:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:49:50,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 00:49:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:50,087 INFO L225 Difference]: With dead ends: 74 [2021-10-13 00:49:50,087 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 00:49:50,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 141.1ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:49:50,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 00:49:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-10-13 00:49:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.326086956521739) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-10-13 00:49:50,098 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2021-10-13 00:49:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:50,098 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-10-13 00:49:50,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 00:49:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-10-13 00:49:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:49:50,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:50,100 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:50,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:50,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:50,325 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:50,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1896102171, now seen corresponding path program 1 times [2021-10-13 00:49:50,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:50,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332101957] [2021-10-13 00:49:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:50,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:50,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:50,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58083642] [2021-10-13 00:49:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:50,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:50,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:50,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:50,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:49:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:50,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:49:50,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:50,572 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 00:49:50,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:50,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332101957] [2021-10-13 00:49:50,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:50,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58083642] [2021-10-13 00:49:50,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58083642] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:50,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:50,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:49:50,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110415298] [2021-10-13 00:49:50,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:49:50,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:50,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:49:50,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:49:50,578 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:50,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:50,706 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-10-13 00:49:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:49:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 00:49:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:50,713 INFO L225 Difference]: With dead ends: 104 [2021-10-13 00:49:50,715 INFO L226 Difference]: Without dead ends: 98 [2021-10-13 00:49:50,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:49:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-13 00:49:50,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2021-10-13 00:49:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.338235294117647) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-10-13 00:49:50,739 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2021-10-13 00:49:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:50,740 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-10-13 00:49:50,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-10-13 00:49:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:49:50,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:50,742 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:50,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:50,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:50,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:50,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:50,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1527669658, now seen corresponding path program 1 times [2021-10-13 00:49:50,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:50,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739816073] [2021-10-13 00:49:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:50,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:50,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:50,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350859062] [2021-10-13 00:49:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:50,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:50,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:50,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:50,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:49:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:51,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:49:51,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:51,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:51,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739816073] [2021-10-13 00:49:51,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:51,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350859062] [2021-10-13 00:49:51,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350859062] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:51,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:51,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:49:51,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741099359] [2021-10-13 00:49:51,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:49:51,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:51,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:49:51,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:49:51,169 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:51,205 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2021-10-13 00:49:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:49:51,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:49:51,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:51,208 INFO L225 Difference]: With dead ends: 121 [2021-10-13 00:49:51,208 INFO L226 Difference]: Without dead ends: 75 [2021-10-13 00:49:51,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:49:51,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-13 00:49:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-13 00:49:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 74 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2021-10-13 00:49:51,243 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2021-10-13 00:49:51,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:51,244 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2021-10-13 00:49:51,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2021-10-13 00:49:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:49:51,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:51,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:51,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:51,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:51,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2092681793, now seen corresponding path program 1 times [2021-10-13 00:49:51,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:51,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891120661] [2021-10-13 00:49:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:51,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:51,488 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:51,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646194318] [2021-10-13 00:49:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:51,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:51,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:51,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:51,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:49:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:51,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:49:51,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:51,732 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 00:49:51,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:51,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891120661] [2021-10-13 00:49:51,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:51,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646194318] [2021-10-13 00:49:51,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646194318] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:51,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:51,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:49:51,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834306740] [2021-10-13 00:49:51,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:49:51,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:51,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:49:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:49:51,738 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:51,918 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2021-10-13 00:49:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:49:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:49:51,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:51,920 INFO L225 Difference]: With dead ends: 82 [2021-10-13 00:49:51,921 INFO L226 Difference]: Without dead ends: 80 [2021-10-13 00:49:51,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:49:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-13 00:49:51,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2021-10-13 00:49:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 72 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 00:49:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2021-10-13 00:49:51,948 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2021-10-13 00:49:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:51,949 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2021-10-13 00:49:51,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:51,950 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2021-10-13 00:49:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:49:51,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:51,956 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, 1, 1, 1] [2021-10-13 00:49:52,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:52,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 00:49:52,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:52,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1135496359, now seen corresponding path program 1 times [2021-10-13 00:49:52,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:52,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895064176] [2021-10-13 00:49:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:52,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:52,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:52,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268828688] [2021-10-13 00:49:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:52,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:52,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:52,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:52,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:49:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:52,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:49:52,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:52,433 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 00:49:52,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:52,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895064176] [2021-10-13 00:49:52,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:52,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268828688] [2021-10-13 00:49:52,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268828688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:49:52,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:49:52,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:49:52,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765276404] [2021-10-13 00:49:52,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:49:52,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:52,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:49:52,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:49:52,437 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 6 states, 6 states have (on average 4.0) 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 00:49:52,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:52,476 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2021-10-13 00:49:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:49:52,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) 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 00:49:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:52,478 INFO L225 Difference]: With dead ends: 82 [2021-10-13 00:49:52,478 INFO L226 Difference]: Without dead ends: 78 [2021-10-13 00:49:52,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:49:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-13 00:49:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-13 00:49:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 75 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-10-13 00:49:52,488 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 24 [2021-10-13 00:49:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:52,489 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-10-13 00:49:52,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) 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 00:49:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-10-13 00:49:52,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:49:52,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:52,490 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:52,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:52,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:52,718 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:52,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:52,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1501746768, now seen corresponding path program 1 times [2021-10-13 00:49:52,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:52,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903252416] [2021-10-13 00:49:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:52,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:52,734 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:52,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749078219] [2021-10-13 00:49:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:52,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:52,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:52,735 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:52,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:49:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:52,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:49:52,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:53,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:53,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903252416] [2021-10-13 00:49:53,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:53,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749078219] [2021-10-13 00:49:53,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749078219] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:49:53,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:49:53,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:49:53,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314945562] [2021-10-13 00:49:53,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:49:53,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:49:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:49:53,253 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 00:49:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:53,622 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2021-10-13 00:49:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:49:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 00:49:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:53,624 INFO L225 Difference]: With dead ends: 142 [2021-10-13 00:49:53,625 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 00:49:53,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 234.4ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:49:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 00:49:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2021-10-13 00:49:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 95 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2021-10-13 00:49:53,643 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 24 [2021-10-13 00:49:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:53,643 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2021-10-13 00:49:53,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 00:49:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2021-10-13 00:49:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:49:53,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:53,645 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:53,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:53,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:53,870 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash 839910097, now seen corresponding path program 1 times [2021-10-13 00:49:53,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:53,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689939527] [2021-10-13 00:49:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:53,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:53,886 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:53,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825439241] [2021-10-13 00:49:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:53,887 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:53,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:53,888 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:53,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:49:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:54,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:49:54,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:54,362 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 00:49:54,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:54,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689939527] [2021-10-13 00:49:54,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:54,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825439241] [2021-10-13 00:49:54,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825439241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:49:54,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:49:54,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:49:54,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303949040] [2021-10-13 00:49:54,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:49:54,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:54,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:49:54,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:49:54,365 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:54,553 INFO L93 Difference]: Finished difference Result 154 states and 178 transitions. [2021-10-13 00:49:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:49:54,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 00:49:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:54,557 INFO L225 Difference]: With dead ends: 154 [2021-10-13 00:49:54,557 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 00:49:54,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.6ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:49:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 00:49:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 108. [2021-10-13 00:49:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 102 states have (on average 1.2450980392156863) internal successors, (127), 107 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2021-10-13 00:49:54,583 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 25 [2021-10-13 00:49:54,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:54,584 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2021-10-13 00:49:54,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:54,585 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2021-10-13 00:49:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 00:49:54,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:54,591 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:54,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:54,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 00:49:54,814 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:54,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1388511663, now seen corresponding path program 1 times [2021-10-13 00:49:54,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:54,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127061125] [2021-10-13 00:49:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:54,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:54,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:54,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964864290] [2021-10-13 00:49:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:54,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:54,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:54,843 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:54,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:49:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:55,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:49:55,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:55,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:55,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127061125] [2021-10-13 00:49:55,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:55,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964864290] [2021-10-13 00:49:55,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964864290] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:49:55,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:49:55,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-13 00:49:55,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410791110] [2021-10-13 00:49:55,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:49:55,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:55,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:49:55,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:49:55,142 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:55,182 INFO L93 Difference]: Finished difference Result 166 states and 196 transitions. [2021-10-13 00:49:55,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:49:55,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 00:49:55,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:55,184 INFO L225 Difference]: With dead ends: 166 [2021-10-13 00:49:55,185 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 00:49:55,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:49:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 00:49:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-13 00:49:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 111 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2021-10-13 00:49:55,199 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 28 [2021-10-13 00:49:55,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:55,200 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2021-10-13 00:49:55,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:55,200 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2021-10-13 00:49:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:49:55,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:55,204 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:55,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:55,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:55,428 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1005744700, now seen corresponding path program 1 times [2021-10-13 00:49:55,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:55,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002502953] [2021-10-13 00:49:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:55,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:55,444 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:55,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330768260] [2021-10-13 00:49:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:55,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:55,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:55,446 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:55,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:49:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:55,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:49:55,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:55,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:55,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002502953] [2021-10-13 00:49:55,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:55,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330768260] [2021-10-13 00:49:55,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330768260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:49:55,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:49:55,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:49:55,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219826320] [2021-10-13 00:49:55,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:49:55,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:55,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:49:55,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:49:55,750 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 5 states, 5 states have (on average 6.6) 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 00:49:55,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:55,876 INFO L93 Difference]: Finished difference Result 215 states and 249 transitions. [2021-10-13 00:49:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:49:55,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) 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 00:49:55,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:55,879 INFO L225 Difference]: With dead ends: 215 [2021-10-13 00:49:55,879 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 00:49:55,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:49:55,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 00:49:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 100. [2021-10-13 00:49:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 99 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 00:49:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2021-10-13 00:49:55,892 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 33 [2021-10-13 00:49:55,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:55,892 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2021-10-13 00:49:55,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) 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 00:49:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2021-10-13 00:49:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:49:55,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:55,894 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:55,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:56,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 00:49:56,102 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:56,103 INFO L82 PathProgramCache]: Analyzing trace with hash 332875516, now seen corresponding path program 1 times [2021-10-13 00:49:56,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:56,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935352205] [2021-10-13 00:49:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:56,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:56,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:56,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682470449] [2021-10-13 00:49:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:56,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:56,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:56,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:56,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:49:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:56,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:49:56,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:56,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:56,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935352205] [2021-10-13 00:49:56,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:56,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682470449] [2021-10-13 00:49:56,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682470449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:49:56,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:49:56,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:49:56,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119020525] [2021-10-13 00:49:56,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:49:56,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:56,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:49:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:49:56,473 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 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 00:49:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:56,511 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2021-10-13 00:49:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:49:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 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 00:49:56,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:56,514 INFO L225 Difference]: With dead ends: 109 [2021-10-13 00:49:56,514 INFO L226 Difference]: Without dead ends: 105 [2021-10-13 00:49:56,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:49:56,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-13 00:49:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2021-10-13 00:49:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.2371134020618557) internal successors, (120), 102 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2021-10-13 00:49:56,526 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 34 [2021-10-13 00:49:56,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:56,527 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2021-10-13 00:49:56,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 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 00:49:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2021-10-13 00:49:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:49:56,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:56,528 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:56,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:56,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:49:56,754 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:56,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1990599685, now seen corresponding path program 2 times [2021-10-13 00:49:56,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:56,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327874199] [2021-10-13 00:49:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:56,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:56,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:56,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24276583] [2021-10-13 00:49:56,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:49:56,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:56,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:56,770 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:56,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:49:56,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:49:56,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:49:56,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:49:56,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:57,386 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 00:49:57,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:57,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327874199] [2021-10-13 00:49:57,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:57,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24276583] [2021-10-13 00:49:57,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24276583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:49:57,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:49:57,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:49:57,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387283181] [2021-10-13 00:49:57,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:49:57,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:49:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:49:57,391 INFO L87 Difference]: Start difference. First operand 103 states and 120 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 00:49:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:57,862 INFO L93 Difference]: Finished difference Result 188 states and 216 transitions. [2021-10-13 00:49:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:49:57,863 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 00:49:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:57,865 INFO L225 Difference]: With dead ends: 188 [2021-10-13 00:49:57,866 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 00:49:57,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 263.1ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:49:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 00:49:57,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 123. [2021-10-13 00:49:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 117 states have (on average 1.2393162393162394) internal successors, (145), 122 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2021-10-13 00:49:57,884 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 34 [2021-10-13 00:49:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:57,884 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2021-10-13 00:49:57,885 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 00:49:57,885 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2021-10-13 00:49:57,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 00:49:57,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:57,886 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, 1, 1] [2021-10-13 00:49:57,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:58,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:49:58,106 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1728467740, now seen corresponding path program 1 times [2021-10-13 00:49:58,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:58,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170749313] [2021-10-13 00:49:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:58,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:58,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:58,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512596634] [2021-10-13 00:49:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:58,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:58,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:58,125 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:58,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:49:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:49:58,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:49:58,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:49:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:49:59,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:49:59,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170749313] [2021-10-13 00:49:59,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:49:59,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512596634] [2021-10-13 00:49:59,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512596634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:49:59,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:49:59,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:49:59,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489841453] [2021-10-13 00:49:59,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:49:59,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:49:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:49:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:49:59,013 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:49:59,295 INFO L93 Difference]: Finished difference Result 197 states and 231 transitions. [2021-10-13 00:49:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:49:59,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 00:49:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:49:59,298 INFO L225 Difference]: With dead ends: 197 [2021-10-13 00:49:59,298 INFO L226 Difference]: Without dead ends: 189 [2021-10-13 00:49:59,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 152.9ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:49:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-10-13 00:49:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 145. [2021-10-13 00:49:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 139 states have (on average 1.2302158273381294) internal successors, (171), 144 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2021-10-13 00:49:59,336 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 35 [2021-10-13 00:49:59,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:49:59,337 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2021-10-13 00:49:59,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:49:59,337 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2021-10-13 00:49:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:49:59,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:49:59,338 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:49:59,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:49:59,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:49:59,558 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:49:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:49:59,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1769158268, now seen corresponding path program 2 times [2021-10-13 00:49:59,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:49:59,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613248206] [2021-10-13 00:49:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:49:59,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:49:59,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:49:59,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156867142] [2021-10-13 00:49:59,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:49:59,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:49:59,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:49:59,590 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:49:59,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:49:59,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:49:59,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:49:59,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:49:59,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:00,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:00,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613248206] [2021-10-13 00:50:00,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:00,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156867142] [2021-10-13 00:50:00,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156867142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:00,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:00,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:50:00,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510073256] [2021-10-13 00:50:00,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:50:00,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:50:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:50:00,047 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:00,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:00,098 INFO L93 Difference]: Finished difference Result 220 states and 262 transitions. [2021-10-13 00:50:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:50:00,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-10-13 00:50:00,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:00,100 INFO L225 Difference]: With dead ends: 220 [2021-10-13 00:50:00,100 INFO L226 Difference]: Without dead ends: 149 [2021-10-13 00:50:00,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:50:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-13 00:50:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-10-13 00:50:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 143 states have (on average 1.2237762237762237) internal successors, (175), 148 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 175 transitions. [2021-10-13 00:50:00,117 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 175 transitions. Word has length 38 [2021-10-13 00:50:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:00,118 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 175 transitions. [2021-10-13 00:50:00,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 175 transitions. [2021-10-13 00:50:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 00:50:00,119 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:00,119 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:00,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:00,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 00:50:00,330 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:00,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:00,331 INFO L82 PathProgramCache]: Analyzing trace with hash -307935353, now seen corresponding path program 1 times [2021-10-13 00:50:00,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:00,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249650558] [2021-10-13 00:50:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:00,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:00,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:00,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776326403] [2021-10-13 00:50:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:00,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:00,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:00,346 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:00,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:50:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:00,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:50:00,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:00,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:00,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249650558] [2021-10-13 00:50:00,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:00,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776326403] [2021-10-13 00:50:00,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776326403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:00,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:00,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:50:00,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007295052] [2021-10-13 00:50:00,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:50:00,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:50:00,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:50:00,849 INFO L87 Difference]: Start difference. First operand 149 states and 175 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 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 00:50:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:00,925 INFO L93 Difference]: Finished difference Result 232 states and 275 transitions. [2021-10-13 00:50:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:50:00,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 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 00:50:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:00,927 INFO L225 Difference]: With dead ends: 232 [2021-10-13 00:50:00,927 INFO L226 Difference]: Without dead ends: 161 [2021-10-13 00:50:00,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:50:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-13 00:50:00,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2021-10-13 00:50:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 153 states have (on average 1.2091503267973855) internal successors, (185), 158 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 185 transitions. [2021-10-13 00:50:00,947 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 185 transitions. Word has length 43 [2021-10-13 00:50:00,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:00,947 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 185 transitions. [2021-10-13 00:50:00,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 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 00:50:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 185 transitions. [2021-10-13 00:50:00,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 00:50:00,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:00,948 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:00,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:01,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:50:01,174 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:01,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1736500463, now seen corresponding path program 2 times [2021-10-13 00:50:01,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:01,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133599371] [2021-10-13 00:50:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:01,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:01,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:01,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141695216] [2021-10-13 00:50:01,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:50:01,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:01,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:01,190 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:01,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:50:01,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:50:01,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:01,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:50:01,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:01,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:01,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133599371] [2021-10-13 00:50:01,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:01,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141695216] [2021-10-13 00:50:01,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141695216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:01,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:01,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:50:01,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074953301] [2021-10-13 00:50:01,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:50:01,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:01,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:50:01,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:50:01,774 INFO L87 Difference]: Start difference. First operand 159 states and 185 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:01,835 INFO L93 Difference]: Finished difference Result 166 states and 192 transitions. [2021-10-13 00:50:01,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:50:01,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-10-13 00:50:01,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:01,838 INFO L225 Difference]: With dead ends: 166 [2021-10-13 00:50:01,838 INFO L226 Difference]: Without dead ends: 162 [2021-10-13 00:50:01,839 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:50:01,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-13 00:50:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-10-13 00:50:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.205128205128205) internal successors, (188), 161 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 188 transitions. [2021-10-13 00:50:01,857 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 188 transitions. Word has length 44 [2021-10-13 00:50:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:01,857 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 188 transitions. [2021-10-13 00:50:01,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 188 transitions. [2021-10-13 00:50:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 00:50:01,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:01,859 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:01,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:02,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 00:50:02,073 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:02,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:02,074 INFO L82 PathProgramCache]: Analyzing trace with hash -78776294, now seen corresponding path program 3 times [2021-10-13 00:50:02,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:02,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942505837] [2021-10-13 00:50:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:02,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:02,087 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:02,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851153241] [2021-10-13 00:50:02,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:50:02,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:02,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:02,099 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:02,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:50:02,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:50:02,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:02,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:50:02,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 00:50:05,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:05,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942505837] [2021-10-13 00:50:05,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:05,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851153241] [2021-10-13 00:50:05,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851153241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:05,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:05,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-13 00:50:05,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340210810] [2021-10-13 00:50:05,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:50:05,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:50:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2021-10-13 00:50:05,766 INFO L87 Difference]: Start difference. First operand 162 states and 188 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 00:50:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:24,388 INFO L93 Difference]: Finished difference Result 191 states and 218 transitions. [2021-10-13 00:50:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:50:24,389 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 44 [2021-10-13 00:50:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:24,393 INFO L225 Difference]: With dead ends: 191 [2021-10-13 00:50:24,394 INFO L226 Difference]: Without dead ends: 185 [2021-10-13 00:50:24,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 8325.5ms TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2021-10-13 00:50:24,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-13 00:50:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 156. [2021-10-13 00:50:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.1842105263157894) internal successors, (180), 155 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 180 transitions. [2021-10-13 00:50:24,422 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 180 transitions. Word has length 44 [2021-10-13 00:50:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:24,423 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 180 transitions. [2021-10-13 00:50:24,423 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 00:50:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 180 transitions. [2021-10-13 00:50:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:50:24,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:24,424 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:24,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:24,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:24,625 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2002321831, now seen corresponding path program 2 times [2021-10-13 00:50:24,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:24,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27270709] [2021-10-13 00:50:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:24,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:24,642 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:24,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127728894] [2021-10-13 00:50:24,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:50:24,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:24,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:24,654 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:24,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 00:50:25,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:50:25,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:25,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:50:25,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:26,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:26,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27270709] [2021-10-13 00:50:26,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:26,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127728894] [2021-10-13 00:50:26,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127728894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:26,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:26,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-13 00:50:26,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962060513] [2021-10-13 00:50:26,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:50:26,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:26,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:50:26,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:50:26,075 INFO L87 Difference]: Start difference. First operand 156 states and 180 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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 00:50:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:26,796 INFO L93 Difference]: Finished difference Result 225 states and 263 transitions. [2021-10-13 00:50:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:50:26,798 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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 00:50:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:26,800 INFO L225 Difference]: With dead ends: 225 [2021-10-13 00:50:26,800 INFO L226 Difference]: Without dead ends: 217 [2021-10-13 00:50:26,801 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 497.6ms TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:50:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-13 00:50:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 162. [2021-10-13 00:50:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 158 states have (on average 1.1835443037974684) internal successors, (187), 161 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 187 transitions. [2021-10-13 00:50:26,826 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 187 transitions. Word has length 45 [2021-10-13 00:50:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:26,827 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 187 transitions. [2021-10-13 00:50:26,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 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 00:50:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 187 transitions. [2021-10-13 00:50:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 00:50:26,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:26,828 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:26,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:27,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:27,039 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:27,039 INFO L82 PathProgramCache]: Analyzing trace with hash 762563284, now seen corresponding path program 3 times [2021-10-13 00:50:27,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:27,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169593816] [2021-10-13 00:50:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:27,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:27,062 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:27,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640034853] [2021-10-13 00:50:27,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:50:27,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:27,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:27,064 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:27,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 00:50:27,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:50:27,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:27,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:50:27,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 00:50:27,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:27,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169593816] [2021-10-13 00:50:27,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:27,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640034853] [2021-10-13 00:50:27,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640034853] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:27,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:27,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:50:27,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270439405] [2021-10-13 00:50:27,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:50:27,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:50:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:50:27,795 INFO L87 Difference]: Start difference. First operand 162 states and 187 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:28,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:28,064 INFO L93 Difference]: Finished difference Result 199 states and 227 transitions. [2021-10-13 00:50:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:50:28,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-13 00:50:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:28,070 INFO L225 Difference]: With dead ends: 199 [2021-10-13 00:50:28,070 INFO L226 Difference]: Without dead ends: 183 [2021-10-13 00:50:28,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:50:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-13 00:50:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 137. [2021-10-13 00:50:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 133 states have (on average 1.1428571428571428) internal successors, (152), 136 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2021-10-13 00:50:28,100 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 49 [2021-10-13 00:50:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:28,101 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2021-10-13 00:50:28,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2021-10-13 00:50:28,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:50:28,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:28,102 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:28,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:28,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-13 00:50:28,330 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:28,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1005346468, now seen corresponding path program 2 times [2021-10-13 00:50:28,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:28,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574070239] [2021-10-13 00:50:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:28,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:28,346 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:28,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295752892] [2021-10-13 00:50:28,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:50:28,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:28,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:28,349 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:28,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 00:50:28,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:50:28,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:28,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:50:28,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:29,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:29,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574070239] [2021-10-13 00:50:29,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:29,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295752892] [2021-10-13 00:50:29,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295752892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:29,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:29,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:50:29,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40042005] [2021-10-13 00:50:29,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:50:29,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:50:29,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:50:29,137 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:29,435 INFO L93 Difference]: Finished difference Result 281 states and 310 transitions. [2021-10-13 00:50:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:50:29,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-13 00:50:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:29,440 INFO L225 Difference]: With dead ends: 281 [2021-10-13 00:50:29,440 INFO L226 Difference]: Without dead ends: 180 [2021-10-13 00:50:29,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:50:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-13 00:50:29,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2021-10-13 00:50:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 142 states have (on average 1.1619718309859155) internal successors, (165), 145 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 00:50:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2021-10-13 00:50:29,466 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 53 [2021-10-13 00:50:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:29,467 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2021-10-13 00:50:29,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:29,467 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2021-10-13 00:50:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:50:29,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:29,468 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:29,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:29,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-13 00:50:29,693 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1869464814, now seen corresponding path program 3 times [2021-10-13 00:50:29,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:29,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704750160] [2021-10-13 00:50:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:29,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:29,706 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:29,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060237024] [2021-10-13 00:50:29,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:50:29,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:29,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:29,708 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:29,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 00:50:30,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:50:30,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:30,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:50:30,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 00:50:30,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:30,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704750160] [2021-10-13 00:50:30,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:30,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060237024] [2021-10-13 00:50:30,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060237024] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:30,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:30,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:50:30,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809299562] [2021-10-13 00:50:30,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:50:30,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:50:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:50:30,458 INFO L87 Difference]: Start difference. First operand 146 states and 165 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 00:50:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:30,668 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2021-10-13 00:50:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:50:30,684 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 53 [2021-10-13 00:50:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:30,686 INFO L225 Difference]: With dead ends: 158 [2021-10-13 00:50:30,686 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 00:50:30,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:50:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 00:50:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2021-10-13 00:50:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 108 states have (on average 1.1203703703703705) internal successors, (121), 110 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-10-13 00:50:30,723 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 53 [2021-10-13 00:50:30,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:30,724 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-10-13 00:50:30,724 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 00:50:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-10-13 00:50:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:50:30,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:30,726 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:30,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:30,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:30,942 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1291947439, now seen corresponding path program 1 times [2021-10-13 00:50:30,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:30,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671148842] [2021-10-13 00:50:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:30,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:30,969 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:30,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931998176] [2021-10-13 00:50:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:30,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:30,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:30,975 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:30,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 00:50:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:31,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 00:50:31,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:31,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:31,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671148842] [2021-10-13 00:50:31,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:31,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931998176] [2021-10-13 00:50:31,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931998176] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:31,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:31,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:50:31,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497590271] [2021-10-13 00:50:31,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:50:31,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:31,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:50:31,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:50:31,651 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:31,711 INFO L93 Difference]: Finished difference Result 172 states and 191 transitions. [2021-10-13 00:50:31,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:50:31,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-13 00:50:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:31,713 INFO L225 Difference]: With dead ends: 172 [2021-10-13 00:50:31,713 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 00:50:31,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:50:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 00:50:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2021-10-13 00:50:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0410958904109588) 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 00:50:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-10-13 00:50:31,731 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 53 [2021-10-13 00:50:31,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:31,731 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-10-13 00:50:31,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-10-13 00:50:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-13 00:50:31,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:31,733 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:31,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:31,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:31,958 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:31,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1395693798, now seen corresponding path program 4 times [2021-10-13 00:50:31,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:31,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265675914] [2021-10-13 00:50:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:31,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:31,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:31,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518572645] [2021-10-13 00:50:31,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:50:31,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:31,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:31,970 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:31,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 00:50:32,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:50:32,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:32,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 00:50:32,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:35,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:35,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265675914] [2021-10-13 00:50:35,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:35,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518572645] [2021-10-13 00:50:35,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518572645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:35,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:35,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-13 00:50:35,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130147036] [2021-10-13 00:50:35,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:50:35,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:35,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:50:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:50:35,541 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:37,227 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2021-10-13 00:50:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:50:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-10-13 00:50:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:37,229 INFO L225 Difference]: With dead ends: 106 [2021-10-13 00:50:37,230 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 00:50:37,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1211.1ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:50:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 00:50:37,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2021-10-13 00:50:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 71 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 00:50:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2021-10-13 00:50:37,248 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 54 [2021-10-13 00:50:37,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:37,249 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2021-10-13 00:50:37,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2021-10-13 00:50:37,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 00:50:37,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:37,250 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:37,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:37,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:37,467 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:37,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:37,467 INFO L82 PathProgramCache]: Analyzing trace with hash 62330478, now seen corresponding path program 3 times [2021-10-13 00:50:37,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:37,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525528351] [2021-10-13 00:50:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:37,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:37,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:37,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178950339] [2021-10-13 00:50:37,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:50:37,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:37,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:37,483 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:37,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 00:50:38,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:50:38,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:38,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:50:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-13 00:50:42,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:42,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525528351] [2021-10-13 00:50:42,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:50:42,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178950339] [2021-10-13 00:50:42,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178950339] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:42,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:42,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:50:42,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318715448] [2021-10-13 00:50:42,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:50:42,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:50:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:50:42,585 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:51,942 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2021-10-13 00:50:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:50:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-13 00:50:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:51,943 INFO L225 Difference]: With dead ends: 101 [2021-10-13 00:50:51,944 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 00:50:51,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 9165.5ms TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:50:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 00:50:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 00:50:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2021-10-13 00:50:51,961 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 58 [2021-10-13 00:50:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:51,962 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2021-10-13 00:50:51,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:51,962 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2021-10-13 00:50:51,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-13 00:50:51,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:51,963 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:52,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:52,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 00:50:52,186 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-13 00:50:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1646664921, now seen corresponding path program 4 times [2021-10-13 00:50:52,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:52,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973282088] [2021-10-13 00:50:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:52,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:52,208 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:50:52,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533649027] [2021-10-13 00:50:52,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:50:52,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:52,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:52,210 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:52,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-13 00:50:52,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:50:52,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:50:52,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-13 00:50:52,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:51:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:51:01,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:51:01,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973282088] [2021-10-13 00:51:01,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:51:01,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533649027] [2021-10-13 00:51:01,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533649027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:51:01,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:51:01,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-13 00:51:01,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249622659] [2021-10-13 00:51:01,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:51:01,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:51:01,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:51:01,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:51:01,605 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 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 00:51:04,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:51:04,198 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2021-10-13 00:51:04,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:51:04,198 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 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) Word has length 63 [2021-10-13 00:51:04,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:51:04,199 INFO L225 Difference]: With dead ends: 85 [2021-10-13 00:51:04,199 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:51:04,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3547.5ms TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2021-10-13 00:51:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:51:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:51:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:51:04,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:51:04,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2021-10-13 00:51:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:51:04,201 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:51:04,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 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 00:51:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:51:04,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:51:04,204 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:51:04,205 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:51:04,205 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:51:04,206 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:51:04,206 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:51:04,206 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:51:04,206 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:51:04,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:51:04,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 00:51:04,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:51:04,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:04,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:04,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:04,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:04,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:04,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:04,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:05,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:05,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:05,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:51:25,167 WARN L207 SmtUtils]: Spent 7.71 s on a formula simplification. DAG size of input: 158 DAG size of output: 94 [2021-10-13 00:51:25,511 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:25,511 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-13 00:51:25,511 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:25,511 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:51:25,511 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:51:25,512 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-13 00:51:25,512 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-10-13 00:51:25,512 INFO L853 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse9 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse0 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse14 (* 4 ULTIMATE.start_main_~y~0)) (.cse6 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (or (and .cse9 (= ULTIMATE.start_main_~a~0 1) .cse8) (and .cse9 (= ULTIMATE.start_main_~b~0 .cse0) (= ULTIMATE.start_main_~a~0 2))))) (let ((.cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse12 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse13 (or (and .cse9 (= ULTIMATE.start_main_~b~0 .cse14) (= ULTIMATE.start_main_~a~0 4) .cse6) (and .cse6 .cse4))) (.cse7 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (let ((.cse1 (or (and (= ULTIMATE.start_main_~q~0 4) (<= ~counter~0 4) (= (+ ULTIMATE.start_main_~r~0 .cse14) ULTIMATE.start_main_~x~0) .cse13 .cse5) (and .cse12 .cse13 .cse7 .cse8))) (.cse3 (< (div (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1))) (.cse10 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))))) (.cse11 (<= 5 ~counter~0)) (.cse2 (= 0 (mod ULTIMATE.start_main_~q~0 (- 2))))) (or (and (= (* ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~q~0 2)) .cse0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (<= 4 ~counter~0) (<= 0 ULTIMATE.start_main_~x~0) .cse2) (and .cse3 (<= ~counter~0 3) (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (<= .cse0 ULTIMATE.start_main_~x~0) .cse4 .cse5) (and (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse6 .cse7 .cse4 .cse8) (and .cse9 (= ULTIMATE.start_main_~b~0 0) (<= 0 ~counter~0) (<= ~counter~0 0) .cse6 .cse7 .cse10 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse5) (and .cse1 .cse11) (and .cse3 .cse12 .cse13 .cse7 .cse8) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 (* (div (* ULTIMATE.start_main_~q~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0)))) (or (and .cse9 .cse6 .cse11 .cse10 .cse5) (and .cse13 .cse11)) .cse2)))))) [2021-10-13 00:51:25,513 INFO L857 garLoopResultBuilder]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-10-13 00:51:25,513 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:25,513 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-13 00:51:25,513 INFO L853 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse17 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (let ((.cse15 (* ULTIMATE.start_main_~y~0 .cse17))) (let ((.cse21 (<= ~counter~0 4)) (.cse13 (= ULTIMATE.start_main_~q~0 0)) (.cse9 (= ULTIMATE.start_main_~b~0 (* 2 .cse15))) (.cse16 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse11 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse18 (= ULTIMATE.start_main_~a~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~r~0)) (.cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse8 (<= 5 ~counter~0)) (.cse19 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse23 (* ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~q~0 2))) (.cse14 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse0 (= .cse23 .cse14)) (.cse1 (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0)) (.cse10 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 .cse23)))) (.cse7 (<= .cse14 ULTIMATE.start_main_~r~0)) (.cse12 (or (let ((.cse22 (* ULTIMATE.start_main_~y~0 (div (* (div ULTIMATE.start_main_~a~0 2) (- 1)) (- 2))))) (and .cse2 (= .cse22 .cse14) .cse21 .cse3 (= ULTIMATE.start_main_~b~0 (* 4 .cse22)) .cse4 .cse13 .cse5 (<= 4 ~counter~0) .cse9 .cse16 .cse11)) (and .cse2 .cse3 .cse4 .cse18 .cse5 .cse6 .cse8 .cse19))) (.cse20 (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 2) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse0 .cse1 .cse10 .cse12) (and .cse2 (<= ~counter~0 3) .cse3 .cse4 .cse13 .cse5 .cse9 (= .cse14 .cse15) .cse16 .cse11 (<= 3 ~counter~0)) (and (<= 2 ~counter~0) .cse2 .cse3 .cse4 .cse13 (<= 1 .cse17) .cse7 (<= (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) .cse9 .cse16 (<= ~counter~0 2) .cse11) (and .cse2 (<= ~counter~0 1) .cse3 (<= 1 ~counter~0) .cse4 .cse18 .cse5 .cse6 .cse16 .cse19) (and .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse14)) .cse20 .cse21 .cse18 .cse5 .cse19) (and .cse12 .cse11) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse8 .cse9 .cse16 .cse11) (and .cse2 .cse20 .cse3 .cse18 .cse5 .cse6 .cse19)))))) [2021-10-13 00:51:25,514 INFO L857 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-10-13 00:51:25,514 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:25,514 INFO L860 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2021-10-13 00:51:25,514 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:25,514 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:25,515 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (< (div (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1))) (.cse4 (* 2 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse2 (= ULTIMATE.start_main_~q~0 1)) (and .cse0 (<= ~counter~0 1) (<= 1 ~counter~0) .cse2 .cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse4)) (<= ~counter~0 4) .cse2 (<= .cse4 ULTIMATE.start_main_~x~0) (<= (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0)) (let ((.cse5 (* ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~q~0 2)))) (and (= .cse5 .cse4) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse0 .cse2 (= (mod ULTIMATE.start_main_~q~0 2) 0) (<= 5 ~counter~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 .cse5))) (<= 0 ULTIMATE.start_main_~x~0))))) [2021-10-13 00:51:25,515 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:25,515 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 41 42) the Hoare annotation is: (let ((.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (< (div (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1))) (.cse6 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse8 (* 2 ULTIMATE.start_main_~y~0)) (.cse5 (<= (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse6 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse3 (= ULTIMATE.start_main_~q~0 1)) (and .cse0 (<= ~counter~0 1) .cse2 (<= 1 ~counter~0) .cse3 .cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (let ((.cse7 (* ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~q~0 2)))) (and (= .cse7 .cse8) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse0 .cse2 .cse3 (= (mod ULTIMATE.start_main_~q~0 2) 0) (<= 5 ~counter~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 .cse7))) (<= 0 ULTIMATE.start_main_~x~0))) (and .cse0 .cse1 .cse6 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse8)) (<= ~counter~0 4) .cse3 (<= .cse8 ULTIMATE.start_main_~x~0) .cse5))) [2021-10-13 00:51:25,516 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:25,516 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse15 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))) (.cse16 (* ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~q~0 2))) (.cse17 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse7 (<= .cse17 ULTIMATE.start_main_~r~0)) (.cse0 (= .cse16 .cse17)) (.cse1 (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0)) (.cse12 (= ULTIMATE.start_main_~a~0 1)) (.cse10 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 .cse16)))) (.cse14 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (<= 1 ULTIMATE.start_main_~r~0)) (.cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse8 (<= 5 ~counter~0)) (.cse9 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 .cse15)))) (.cse13 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse11 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 2) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and (<= 2 ~counter~0) .cse2 .cse3 .cse4 .cse12 .cse5 .cse6 .cse13 (<= ~counter~0 2) .cse14) (and .cse2 (<= ~counter~0 3) .cse3 .cse4 (<= 1 .cse15) .cse6 .cse7 (<= (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) .cse9 .cse13 .cse11 (<= 3 ~counter~0)) (and .cse2 (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) .cse3 .cse4 .cse12 .cse5 .cse6 .cse14) (and .cse2 .cse3 (= ULTIMATE.start_main_~a~0 4) .cse4 .cse5 .cse6 (<= 4 ~counter~0) .cse9 .cse13) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse12 .cse5 .cse6 .cse8 .cse10 .cse14) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse8 .cse9 .cse13 .cse11)))) [2021-10-13 00:51:25,516 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:25,517 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse15 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (let ((.cse17 (* ULTIMATE.start_main_~y~0 .cse15)) (.cse18 (* ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~q~0 2))) (.cse16 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse7 (<= .cse16 ULTIMATE.start_main_~r~0)) (.cse0 (= .cse18 .cse16)) (.cse1 (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0)) (.cse10 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 .cse18)))) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse8 (<= 5 ~counter~0)) (.cse9 (= ULTIMATE.start_main_~b~0 (* 2 .cse17))) (.cse13 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse11 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse12 (= ULTIMATE.start_main_~a~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~r~0)) (.cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse14 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 2) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and (<= 2 ~counter~0) .cse2 .cse3 .cse4 .cse12 .cse5 .cse6 .cse13 (<= ~counter~0 2) .cse14) (and .cse2 (<= ~counter~0 3) .cse3 .cse4 (<= 1 .cse15) .cse6 .cse7 (<= (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) .cse9 .cse13 .cse11 (<= 3 ~counter~0)) (and .cse2 .cse3 .cse4 .cse5 .cse6 (<= 4 ~counter~0) .cse9 (= .cse16 .cse17) .cse13 .cse11) (and .cse0 .cse1 .cse2 .cse3 .cse12 .cse5 .cse6 .cse8 .cse10 .cse14) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse8 .cse9 .cse13 .cse11) (and .cse2 (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) .cse3 .cse12 .cse5 .cse6 .cse14))))) [2021-10-13 00:51:25,517 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:25,517 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 51 52) the Hoare annotation is: (let ((.cse16 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))) (.cse18 (* ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~q~0 2))) (.cse17 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse0 (= .cse18 .cse17)) (.cse1 (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0)) (.cse10 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 .cse18)))) (.cse12 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse7 (<= .cse17 ULTIMATE.start_main_~r~0)) (.cse8 (<= 5 ~counter~0)) (.cse11 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse9 (= ULTIMATE.start_main_~b~0 (* 2 (* ULTIMATE.start_main_~y~0 .cse16)))) (.cse14 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse13 (= ULTIMATE.start_main_~a~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~r~0)) (.cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse15 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 2) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and (<= 2 ~counter~0) .cse2 .cse12 .cse4 .cse13 .cse5 .cse6 .cse14 (<= ~counter~0 2) .cse15) (and .cse0 .cse1 .cse2 .cse3 .cse13 .cse5 .cse6 .cse8 .cse10 .cse15) (and .cse2 (<= ~counter~0 3) .cse12 .cse4 (<= 1 .cse16) .cse6 .cse7 (<= (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) .cse9 .cse14 .cse11 (<= 3 ~counter~0)) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse8 .cse9 .cse14 .cse11) (and .cse2 .cse3 (= ULTIMATE.start_main_~a~0 4) .cse4 .cse5 .cse6 (<= 4 ~counter~0) .cse9 .cse14) (and .cse2 .cse3 (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) .cse13 .cse5 .cse6 .cse15)))) [2021-10-13 00:51:25,517 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:25,517 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:51:25,517 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse13 (* ULTIMATE.start_main_~y~0 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2))))) (let ((.cse11 (= ULTIMATE.start_main_~b~0 (* 2 .cse13))) (.cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~a~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~r~0)) (.cse8 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (let ((.cse4 (<= (* 2 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) (.cse0 (let ((.cse15 (<= 5 ~counter~0))) (or (and .cse3 .cse5 .cse6 .cse10 .cse8 .cse15 .cse11 .cse2) (and .cse3 .cse5 .cse6 .cse7 .cse10 .cse8 .cse15 .cse9)))) (.cse12 (* 2 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2) (and (<= 2 ~counter~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse1 (<= ~counter~0 2) .cse9) (and .cse3 .cse5 .cse6 .cse10 .cse8 (<= 4 ~counter~0) .cse11 (= .cse12 .cse13) .cse1 .cse2) (let ((.cse14 (* ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~q~0 2)))) (and (= .cse14 .cse12) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse4 .cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* 2 .cse14))) .cse9)) (and .cse3 (<= ~counter~0 3) .cse5 .cse6 (= ULTIMATE.start_main_~a~0 2) .cse10 .cse8 (<= .cse12 ULTIMATE.start_main_~r~0) .cse11 .cse1 (<= 3 ~counter~0)))))) [2021-10-13 00:51:25,518 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-13 00:51:25,518 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-13 00:51:25,518 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:25,518 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:25,518 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:25,518 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:25,519 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:25,519 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:25,519 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:25,519 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-13 00:51:25,519 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:51:25,519 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-13 00:51:25,524 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:51:25,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:51:25 BoogieIcfgContainer [2021-10-13 00:51:25,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:51:25,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:51:25,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:51:25,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:51:25,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:49:47" (3/4) ... [2021-10-13 00:51:25,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:51:25,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-13 00:51:25,644 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:51:25,644 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:51:25,644 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:51:25,726 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:51:25,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:51:25,728 INFO L168 Benchmark]: Toolchain (without parser) took 98901.73 ms. Allocated memory was 104.9 MB in the beginning and 172.0 MB in the end (delta: 67.1 MB). Free memory was 69.3 MB in the beginning and 74.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:25,728 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 85.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:51:25,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.97 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 83.1 MB in the end (delta: -13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:25,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 104.9 MB. Free memory was 82.6 MB in the beginning and 81.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:51:25,730 INFO L168 Benchmark]: Boogie Preprocessor took 31.93 ms. Allocated memory is still 104.9 MB. Free memory was 81.3 MB in the beginning and 80.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:25,731 INFO L168 Benchmark]: RCFGBuilder took 395.47 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 68.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:25,731 INFO L168 Benchmark]: TraceAbstraction took 97920.37 ms. Allocated memory was 104.9 MB in the beginning and 172.0 MB in the end (delta: 67.1 MB). Free memory was 68.4 MB in the beginning and 78.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 101.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:25,732 INFO L168 Benchmark]: Witness Printer took 133.50 ms. Allocated memory is still 172.0 MB. Free memory was 78.4 MB in the beginning and 74.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:51:25,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 104.9 MB. Free memory is still 85.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.97 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 83.1 MB in the end (delta: -13.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 104.9 MB. Free memory was 82.6 MB in the beginning and 81.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.93 ms. Allocated memory is still 104.9 MB. Free memory was 81.3 MB in the beginning and 80.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 395.47 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 68.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97920.37 ms. Allocated memory was 104.9 MB in the beginning and 172.0 MB in the end (delta: 67.1 MB). Free memory was 68.4 MB in the beginning and 78.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 101.3 MB. Max. memory is 16.1 GB. * Witness Printer took 133.50 ms. Allocated memory is still 172.0 MB. Free memory was 78.4 MB in the beginning and 74.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 97742.7ms, OverallIterations: 27, TraceHistogramMax: 5, EmptinessCheckTime: 45.9ms, AutomataDifference: 36536.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 21088.1ms, InitialAbstractionConstructionTime: 32.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 969 SDtfs, 1764 SDslu, 2536 SDs, 0 SdLazy, 2715 SolverSat, 468 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 21819.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 988 GetRequests, 754 SyntacticMatches, 2 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 24380.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=18, InterpolantAutomatonStates: 245, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 528.4ms AutomataMinimizationTime, 27 MinimizatonAttempts, 506 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 76 NumberOfFragments, 2796 HoareAnnotationTreeSize, 10 FomulaSimplifications, 7698168 FormulaSimplificationTreeSizeReduction, 1108.2ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 119036 FormulaSimplificationTreeSizeReductionInter, 19968.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 247.3ms SsaConstructionTime, 764.8ms SatisfiabilityAnalysisTime, 25701.1ms InterpolantComputationTime, 919 NumberOfCodeBlocks, 805 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 892 ConstructedInterpolants, 0 QuantifiedInterpolants, 7329 SizeOfPredicates, 154 NumberOfNonLiveVariables, 3386 ConjunctsInSsa, 403 ConjunctsInUnsatCore, 27 InterpolantComputations, 10 PerfectInterpolantSequences, 283/582 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 == cond) && 1 <= y) && a == 2) && 1 <= r) && x == r + q * y) && 2 * y <= r) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && x == r + 2 * (y * (q / 2))) && a % -2 == 0) || (((((((((2 <= counter && cond == 1) && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && r == x) && counter <= 2) && b == y)) || (((((((((((cond == 1 && counter <= 3) && 1 == cond) && 1 <= y) && 1 <= a * -1 / -2) && x == r + q * y) && 2 * y <= r) && b * -1 / -2 <= y) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0) && 3 <= counter)) || (((((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && 4 <= counter) && b == 2 * (y * (a * -1 / -2))) && 2 * y == y * (a * -1 / -2)) && r == x) && a % -2 == 0)) || (((((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 == cond) && a == 1) && 1 <= r) && x == r + q * y) && 5 <= counter) && x == r + 2 * (y * (q / 2))) && b == y)) || ((((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0)) || ((((((cond == 1 && r < 2 * b) && 1 == cond) && a == 1) && 1 <= r) && x == r + q * y) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) || (((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == y)) && r == x) && a % -2 == 0) || (((((((((2 <= counter && cond == 1) && 2 * b <= r) && 1 == cond) && 1 <= y) && a == 1) && x == r + q * y) && r == x) && counter <= 2) && b == y)) || (((((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && 4 <= counter) && b == 2 * (y * (a * -1 / -2))) && 2 * y == y * (a * -1 / -2)) && r == x) && a % -2 == 0)) || (((((y * (q / 2) == 2 * y && 2 * r < x) && 2 * b <= r) && ((((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) || (((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == y))) && x == r + 2 * (y * (q / 2))) && b == y)) || ((((((((((cond == 1 && counter <= 3) && 1 == cond) && 1 <= y) && a == 2) && 1 <= r) && x == r + q * y) && 2 * y <= r) && b == 2 * (y * (a * -1 / -2))) && r == x) && 3 <= counter) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((((((((((((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 <= cond) && 1 <= y) && a == 2) && 1 <= r) && x == r + q * y) && 2 * y <= r) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && x == r + 2 * (y * (q / 2))) && a % -2 == 0) || (((((((((2 <= counter && cond == 1) && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && r == x) && counter <= 2) && b == y)) || (((((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 <= cond) && a == 1) && 1 <= r) && x == r + q * y) && 5 <= counter) && x == r + 2 * (y * (q / 2))) && b == y)) || (((((((((((cond == 1 && counter <= 3) && 1 == cond) && 1 <= y) && 1 <= a * -1 / -2) && x == r + q * y) && 2 * y <= r) && b * -1 / -2 <= y) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0) && 3 <= counter)) || ((((((((cond == 1 && 1 <= cond) && 1 <= y) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0)) || ((((((((cond == 1 && 1 <= cond) && a == 4) && 1 <= y) && 1 <= r) && x == r + q * y) && 4 <= counter) && b == 2 * (y * (a * -1 / -2))) && r == x)) || ((((((cond == 1 && 1 <= cond) && r < 2 * b) && a == 1) && 1 <= r) && x == r + q * y) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 == cond) && 1 <= y) && a == 2) && 1 <= r) && x == r + q * y) && 2 * y <= r) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && x == r + 2 * (y * (q / 2))) && a % -2 == 0) || (((((((((2 <= counter && cond == 1) && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && r == x) && counter <= 2) && b == y)) || (((((((((((cond == 1 && counter <= 3) && 1 == cond) && 1 <= y) && 1 <= a * -1 / -2) && x == r + q * y) && 2 * y <= r) && b * -1 / -2 <= y) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0) && 3 <= counter)) || (((((((cond == 1 && r < 2 * b) && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && b == y)) || ((((((((cond == 1 && 1 == cond) && a == 4) && 1 <= y) && 1 <= r) && x == r + q * y) && 4 <= counter) && b == 2 * (y * (a * -1 / -2))) && r == x)) || ((((((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && 5 <= counter) && x == r + 2 * (y * (q / 2))) && b == y)) || ((((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((((((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 == cond) && 1 <= y) && a == 2) && 1 <= r) && x == r + q * y) && 2 * y <= r) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && x == r + 2 * (y * (q / 2))) && a % -2 == 0) || (((y * (q / 2) == 2 * y && 2 * r < x) && x == r + 2 * (y * (q / 2))) && ((((((((((((cond == 1 && y * (a / 2 * -1 / -2) == 2 * y) && counter <= 4) && 1 == cond) && b == 4 * (y * (a / 2 * -1 / -2))) && 1 <= y) && q == 0) && 1 <= r) && 4 <= counter) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0) || (((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == y)))) || ((((((((((cond == 1 && counter <= 3) && 1 == cond) && 1 <= y) && q == 0) && 1 <= r) && b == 2 * (y * (a * -1 / -2))) && 2 * y == y * (a * -1 / -2)) && r == x) && a % -2 == 0) && 3 <= counter)) || (((((((((((2 <= counter && cond == 1) && 1 == cond) && 1 <= y) && q == 0) && 1 <= a * -1 / -2) && 2 * y <= r) && b * -1 / -2 <= y) && b == 2 * (y * (a * -1 / -2))) && r == x) && counter <= 2) && a % -2 == 0)) || (((((((((cond == 1 && counter <= 1) && 1 == cond) && 1 <= counter) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && r == x) && b == y)) || ((((((((cond == 1 && 1 <= cond) && q == 2) && x == r + 2 * y) && r < 2 * b) && counter <= 4) && a == 1) && 1 <= r) && b == y)) || (((((((((((((cond == 1 && y * (a / 2 * -1 / -2) == 2 * y) && counter <= 4) && 1 == cond) && b == 4 * (y * (a / 2 * -1 / -2))) && 1 <= y) && q == 0) && 1 <= r) && 4 <= counter) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0) || (((((((cond == 1 && 1 == cond) && 1 <= y) && a == 1) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == y)) && a % -2 == 0)) || ((((((((cond == 1 && 1 == cond) && 1 <= y) && 1 <= r) && x == r + q * y) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0)) || ((((((cond == 1 && r < 2 * b) && 1 == cond) && a == 1) && 1 <= r) && x == r + q * y) && b == y) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && (-1 + r * -1) / -2 < y + 1) && 1 == cond) && 1 <= y) && x == r + q * y) && b * -1 / -2 <= y) || ((((((x == r + y && cond == 1) && 1 <= cond) && r < y) && b <= y) && 1 <= y) && q == 1)) || ((((((cond == 1 && counter <= 1) && 1 == cond) && 1 <= counter) && 1 <= y) && x == r + q * y) && r == x)) || ((((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 == cond) && 1 <= y) && q % 2 == 0) && 5 <= counter) && x == r + 2 * (y * (q / 2))) && 0 <= x)) || ((((((((cond == 1 && (-1 + r * -1) / -2 < y + 1) && 1 <= cond) && q == 2) && x == r + 2 * y) && counter <= 4) && 1 <= y) && 2 * y <= x) && b * -1 / -2 <= y) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((y * (q / 2) == 2 * y && 2 * r < x) && 1 <= cond) && (((((q == 4 && counter <= 4) && r + 4 * y == x) && ((((cond == 1 && b == 4 * y) && a == 4) && 1 <= y) || (1 <= y && (((cond == 1 && a == 1) && b == y) || ((cond == 1 && b == 2 * y) && a == 2))))) && a % -2 == 0) || (((1 == cond && ((((cond == 1 && b == 4 * y) && a == 4) && 1 <= y) || (1 <= y && (((cond == 1 && a == 1) && b == y) || ((cond == 1 && b == 2 * y) && a == 2))))) && x == r + q * y) && b == y))) && 4 <= counter) && 0 <= x) && 0 == q % -2) || (((((((-1 + r * -1) / -2 < y + 1 && counter <= 3) && q == 2) && x == r + 2 * y) && 2 * y <= x) && (((cond == 1 && a == 1) && b == y) || ((cond == 1 && b == 2 * y) && a == 2))) && a % -2 == 0)) || ((((r < y && 1 <= y) && x == r + q * y) && (((cond == 1 && a == 1) && b == y) || ((cond == 1 && b == 2 * y) && a == 2))) && b == y)) || ((((((((cond == 1 && b == 0) && 0 <= counter) && counter <= 0) && 1 <= y) && x == r + q * y) && b == 2 * (y * (a * -1 / -2))) && r == x) && a % -2 == 0)) || ((((((q == 4 && counter <= 4) && r + 4 * y == x) && ((((cond == 1 && b == 4 * y) && a == 4) && 1 <= y) || (1 <= y && (((cond == 1 && a == 1) && b == y) || ((cond == 1 && b == 2 * y) && a == 2))))) && a % -2 == 0) || (((1 == cond && ((((cond == 1 && b == 4 * y) && a == 4) && 1 <= y) || (1 <= y && (((cond == 1 && a == 1) && b == y) || ((cond == 1 && b == 2 * y) && a == 2))))) && x == r + q * y) && b == y)) && 5 <= counter)) || (((((-1 + r * -1) / -2 < y + 1 && 1 == cond) && ((((cond == 1 && b == 4 * y) && a == 4) && 1 <= y) || (1 <= y && (((cond == 1 && a == 1) && b == y) || ((cond == 1 && b == 2 * y) && a == 2))))) && x == r + q * y) && b == y)) || ((x == r + 2 * (q * -1 / -2 * y) && (((((cond == 1 && 1 <= y) && 5 <= counter) && b == 2 * (y * (a * -1 / -2))) && a % -2 == 0) || (((((cond == 1 && b == 4 * y) && a == 4) && 1 <= y) || (1 <= y && (((cond == 1 && a == 1) && b == y) || ((cond == 1 && b == 2 * y) && a == 2)))) && 5 <= counter))) && 0 == q % -2) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && (-1 + r * -1) / -2 < y + 1) && 1 == cond) && 1 <= y) && a == 1) && x == r + q * y) && b == y) || (((((x == r + y && cond == 1) && r < y) && b <= y) && 1 <= y) && q == 1)) || (((((cond == 1 && counter <= 1) && 1 <= counter) && 1 <= y) && x == r + q * y) && r == x)) || (((((((cond == 1 && (-1 + r * -1) / -2 < y + 1) && q == 2) && x == r + 2 * y) && counter <= 4) && 1 <= y) && 2 * y <= x) && b * -1 / -2 <= y)) || (((((((y * (q / 2) == 2 * y && 2 * r < x) && cond == 1) && 1 <= y) && q % 2 == 0) && 5 <= counter) && x == r + 2 * (y * (q / 2))) && 0 <= x) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:51:25,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a1a2dbc-77bc-410e-93aa-538d995c2cd5/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...