./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/modulus-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/modulus-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0 --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 573a31c00e41ae75ac0c33bb566a9b1a0edc6ad80bfad98caf671cb01963ec0c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:22:19,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:22:19,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:22:19,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:22:19,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:22:19,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:22:19,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:22:19,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:22:19,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:22:19,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:22:19,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:22:19,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:22:19,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:22:19,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:22:19,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:22:19,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:22:19,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:22:19,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:22:19,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:22:19,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:22:19,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:22:19,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:22:19,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:22:19,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:22:19,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:22:19,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:22:19,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:22:19,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:22:19,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:22:19,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:22:19,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:22:19,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:22:19,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:22:19,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:22:19,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:22:19,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:22:19,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:22:19,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:22:19,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:22:19,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:22:19,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:22:19,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:22:19,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:22:19,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:22:19,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:22:19,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:22:19,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:22:19,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:22:19,667 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:22:19,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:22:19,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:22:19,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:22:19,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:22:19,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:22:19,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:22:19,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:22:19,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:22:19,673 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:22:19,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:22:19,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:22:19,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:22:19,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:22:19,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:22:19,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:22:19,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:22:19,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:22:19,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:22:19,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:22:19,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:22:19,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:22:19,677 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:22:19,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:22:19,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:22:19,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:22:19,679 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_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573a31c00e41ae75ac0c33bb566a9b1a0edc6ad80bfad98caf671cb01963ec0c [2021-11-22 14:22:19,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:22:19,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:22:20,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:22:20,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:22:20,003 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:22:20,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/bitvector/modulus-2.i [2021-11-22 14:22:20,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/data/7f4470ac2/e6dc88f28b664f8da3d974050e4fde29/FLAGdbd4b404c [2021-11-22 14:22:20,636 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:22:20,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/sv-benchmarks/c/bitvector/modulus-2.i [2021-11-22 14:22:20,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/data/7f4470ac2/e6dc88f28b664f8da3d974050e4fde29/FLAGdbd4b404c [2021-11-22 14:22:21,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/data/7f4470ac2/e6dc88f28b664f8da3d974050e4fde29 [2021-11-22 14:22:21,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:22:21,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:22:21,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:22:21,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:22:21,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:22:21,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2455e784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21, skipping insertion in model container [2021-11-22 14:22:21,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:22:21,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:22:21,241 WARN L230 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_aebf6be3-7787-400e-9cdf-1dc3b846cb38/sv-benchmarks/c/bitvector/modulus-2.i[1252,1265] [2021-11-22 14:22:21,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:22:21,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:22:21,311 WARN L230 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_aebf6be3-7787-400e-9cdf-1dc3b846cb38/sv-benchmarks/c/bitvector/modulus-2.i[1252,1265] [2021-11-22 14:22:21,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:22:21,329 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:22:21,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21 WrapperNode [2021-11-22 14:22:21,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:22:21,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:22:21,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:22:21,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:22:21,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,364 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2021-11-22 14:22:21,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:22:21,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:22:21,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:22:21,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:22:21,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:22:21,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:22:21,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:22:21,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:22:21,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (1/1) ... [2021-11-22 14:22:21,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:22:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:22:21,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:22:21,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:22:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:22:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:22:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:22:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:22:21,554 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:22:21,556 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:22:21,718 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:22:21,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:22:21,725 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 14:22:21,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:21 BoogieIcfgContainer [2021-11-22 14:22:21,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:22:21,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:22:21,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:22:21,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:22:21,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:22:21" (1/3) ... [2021-11-22 14:22:21,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6c6af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:22:21, skipping insertion in model container [2021-11-22 14:22:21,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:22:21" (2/3) ... [2021-11-22 14:22:21,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6c6af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:22:21, skipping insertion in model container [2021-11-22 14:22:21,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:21" (3/3) ... [2021-11-22 14:22:21,736 INFO L111 eAbstractionObserver]: Analyzing ICFG modulus-2.i [2021-11-22 14:22:21,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:22:21,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:22:21,791 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:22:21,798 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:22:21,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:22:21,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 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) [2021-11-22 14:22:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 14:22:21,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:21,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:21,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:22:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1232845228, now seen corresponding path program 1 times [2021-11-22 14:22:21,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:22:21,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091387045] [2021-11-22 14:22:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:21,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:22:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:21,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:22:21,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091387045] [2021-11-22 14:22:21,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091387045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:21,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:21,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:22:21,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176414531] [2021-11-22 14:22:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:21,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:22:21,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:22:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:22:22,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:22:22,007 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:22,022 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2021-11-22 14:22:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:22:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 14:22:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:22,031 INFO L225 Difference]: With dead ends: 33 [2021-11-22 14:22:22,032 INFO L226 Difference]: Without dead ends: 13 [2021-11-22 14:22:22,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:22:22,038 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:22,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:22:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-22 14:22:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-22 14:22:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-22 14:22:22,070 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-11-22 14:22:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:22,071 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-22 14:22:22,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:22,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-22 14:22:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 14:22:22,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:22,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:22,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:22:22,073 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:22:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:22,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2042191854, now seen corresponding path program 1 times [2021-11-22 14:22:22,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:22:22,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349650439] [2021-11-22 14:22:22,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:22,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:22:22,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:22:22,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309312156] [2021-11-22 14:22:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:22,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:22,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:22:22,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:22:22,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:22:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:22,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 14:22:22,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:22,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:22:22,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:22:22,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349650439] [2021-11-22 14:22:22,801 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:22:22,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309312156] [2021-11-22 14:22:22,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309312156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:22,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:22,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:22:22,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744301867] [2021-11-22 14:22:22,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:22,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:22:22,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:22:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:22:22,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:22:22,805 INFO L87 Difference]: Start difference. First operand 13 states and 15 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) [2021-11-22 14:22:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:22,917 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-11-22 14:22:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:22:22,918 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 [2021-11-22 14:22:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:22,920 INFO L225 Difference]: With dead ends: 23 [2021-11-22 14:22:22,920 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 14:22:22,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:22:22,923 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:22,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:22:22,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 14:22:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-11-22 14:22:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2021-11-22 14:22:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-11-22 14:22:22,939 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2021-11-22 14:22:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:22,944 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-11-22 14:22:22,945 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) [2021-11-22 14:22:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-11-22 14:22:22,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 14:22:22,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:22,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:22,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:23,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:23,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:22:23,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2042132272, now seen corresponding path program 1 times [2021-11-22 14:22:23,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:22:23,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002175052] [2021-11-22 14:22:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:23,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:22:23,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:22:23,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679641636] [2021-11-22 14:22:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:23,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:23,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:22:23,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:22:23,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:22:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:23,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:22:23,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:23,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:22:23,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:22:23,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002175052] [2021-11-22 14:22:23,761 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:22:23,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679641636] [2021-11-22 14:22:23,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679641636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:23,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:23,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:22:23,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392896023] [2021-11-22 14:22:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:23,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:22:23,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:22:23,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:22:23,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:22:23,764 INFO L87 Difference]: Start difference. First operand 15 states and 18 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) [2021-11-22 14:22:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:23,820 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-22 14:22:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:22:23,821 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 [2021-11-22 14:22:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:23,822 INFO L225 Difference]: With dead ends: 19 [2021-11-22 14:22:23,822 INFO L226 Difference]: Without dead ends: 14 [2021-11-22 14:22:23,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:22:23,824 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:23,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 33 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:22:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-22 14:22:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-22 14:22:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-22 14:22:23,828 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2021-11-22 14:22:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:23,828 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-22 14:22:23,829 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) [2021-11-22 14:22:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-22 14:22:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 14:22:23,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:23,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:23,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:24,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:24,046 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:22:24,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash 387361989, now seen corresponding path program 1 times [2021-11-22 14:22:24,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:22:24,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496764097] [2021-11-22 14:22:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:24,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:22:24,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:22:24,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537218547] [2021-11-22 14:22:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:24,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:24,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:22:24,062 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:22:24,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:22:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:24,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:22:24,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:24,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:22:24,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:22:24,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496764097] [2021-11-22 14:22:24,220 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:22:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537218547] [2021-11-22 14:22:24,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537218547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:24,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:24,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:22:24,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934702330] [2021-11-22 14:22:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:24,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:22:24,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:22:24,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:22:24,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:22:24,225 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:24,265 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-11-22 14:22:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:22:24,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 14:22:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:24,267 INFO L225 Difference]: With dead ends: 23 [2021-11-22 14:22:24,267 INFO L226 Difference]: Without dead ends: 15 [2021-11-22 14:22:24,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:22:24,281 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:24,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 16 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:22:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-22 14:22:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-22 14:22:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-22 14:22:24,300 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13 [2021-11-22 14:22:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:24,301 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-22 14:22:24,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-22 14:22:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 14:22:24,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:24,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:24,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:24,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:24,517 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:22:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1988806915, now seen corresponding path program 1 times [2021-11-22 14:22:24,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:22:24,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914461073] [2021-11-22 14:22:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:24,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:22:24,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:22:24,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335927847] [2021-11-22 14:22:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:24,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:24,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:22:24,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:22:24,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:22:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:24,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 14:22:24,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:22:24,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:22:24,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:22:24,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914461073] [2021-11-22 14:22:24,960 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:22:24,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335927847] [2021-11-22 14:22:24,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335927847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:24,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:24,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:22:24,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985061126] [2021-11-22 14:22:24,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:24,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:22:24,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:22:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:22:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:22:24,964 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-11-22 14:22:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:25,026 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-22 14:22:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:22:25,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2021-11-22 14:22:25,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:25,029 INFO L225 Difference]: With dead ends: 19 [2021-11-22 14:22:25,029 INFO L226 Difference]: Without dead ends: 15 [2021-11-22 14:22:25,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:22:25,032 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:25,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 27 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:22:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-22 14:22:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-22 14:22:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-22 14:22:25,039 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 14 [2021-11-22 14:22:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:25,039 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-22 14:22:25,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-11-22 14:22:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-22 14:22:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 14:22:25,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:25,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:25,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:25,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:25,269 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:22:25,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1988866497, now seen corresponding path program 1 times [2021-11-22 14:22:25,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:22:25,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954413561] [2021-11-22 14:22:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:25,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:22:25,283 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:22:25,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223070492] [2021-11-22 14:22:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:25,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:25,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:22:25,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:22:25,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 14:22:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:25,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:22:25,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:22:25,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:22:25,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:22:25,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954413561] [2021-11-22 14:22:25,677 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:22:25,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223070492] [2021-11-22 14:22:25,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223070492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:25,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:25,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:22:25,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952502284] [2021-11-22 14:22:25,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:25,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:22:25,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:22:25,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:22:25,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:22:25,680 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-11-22 14:22:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:25,719 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-22 14:22:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:22:25,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 [2021-11-22 14:22:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:25,719 INFO L225 Difference]: With dead ends: 15 [2021-11-22 14:22:25,719 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 14:22:25,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:22:25,721 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:25,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:22:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 14:22:25,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 14:22:25,723 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) [2021-11-22 14:22:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 14:22:25,723 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-11-22 14:22:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:25,723 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 14:22:25,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-11-22 14:22:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 14:22:25,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 14:22:25,726 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 14:22:25,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:25,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:22:25,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 14:22:25,950 INFO L854 garLoopResultBuilder]: At program point L56-2(lines 56 59) the Hoare annotation is: (< 0 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) [2021-11-22 14:22:25,950 INFO L858 garLoopResultBuilder]: For program point L56-3(lines 56 59) no Hoare annotation was computed. [2021-11-22 14:22:25,951 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 66) no Hoare annotation was computed. [2021-11-22 14:22:25,951 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 52 66) no Hoare annotation was computed. [2021-11-22 14:22:25,951 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-11-22 14:22:25,951 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 14:22:25,951 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 14:22:25,951 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 14:22:25,952 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2021-11-22 14:22:25,952 INFO L861 garLoopResultBuilder]: At program point L28-2(lines 27 32) the Hoare annotation is: true [2021-11-22 14:22:25,952 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2021-11-22 14:22:25,952 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 14:22:25,952 INFO L858 garLoopResultBuilder]: For program point L62-1(lines 62 64) no Hoare annotation was computed. [2021-11-22 14:22:25,952 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-11-22 14:22:25,953 INFO L854 garLoopResultBuilder]: At program point L54-2(lines 54 61) the Hoare annotation is: (and (< 0 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) (= |ULTIMATE.start_main_~m~0#1| |ULTIMATE.start_main_~n~0#1|)) [2021-11-22 14:22:25,953 INFO L858 garLoopResultBuilder]: For program point L54-3(lines 52 66) no Hoare annotation was computed. [2021-11-22 14:22:25,953 INFO L861 garLoopResultBuilder]: At program point L67(lines 44 68) the Hoare annotation is: true [2021-11-22 14:22:25,953 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-11-22 14:22:25,956 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-22 14:22:25,958 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 14:22:25,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:22:25 BoogieIcfgContainer [2021-11-22 14:22:25,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 14:22:25,970 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 14:22:25,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 14:22:25,970 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 14:22:25,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:21" (3/4) ... [2021-11-22 14:22:25,974 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 14:22:25,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-22 14:22:25,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-22 14:22:25,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 14:22:25,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 14:22:26,016 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 14:22:26,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 14:22:26,017 INFO L158 Benchmark]: Toolchain (without parser) took 5007.57ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 73.8MB in the beginning and 93.9MB in the end (delta: -20.1MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-11-22 14:22:26,017 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory was 58.6MB in the beginning and 58.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:22:26,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.08ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 73.8MB in the beginning and 107.3MB in the end (delta: -33.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:22:26,018 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.73ms. Allocated memory is still 132.1MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:22:26,018 INFO L158 Benchmark]: Boogie Preprocessor took 21.01ms. Allocated memory is still 132.1MB. Free memory was 105.7MB in the beginning and 104.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:22:26,019 INFO L158 Benchmark]: RCFGBuilder took 333.81ms. Allocated memory is still 132.1MB. Free memory was 104.6MB in the beginning and 95.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:22:26,019 INFO L158 Benchmark]: TraceAbstraction took 4240.16ms. Allocated memory is still 132.1MB. Free memory was 94.7MB in the beginning and 95.9MB in the end (delta: -1.2MB). Peak memory consumption was 826.0kB. Max. memory is 16.1GB. [2021-11-22 14:22:26,019 INFO L158 Benchmark]: Witness Printer took 46.24ms. Allocated memory is still 132.1MB. Free memory was 95.9MB in the beginning and 93.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:22:26,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory was 58.6MB in the beginning and 58.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.08ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 73.8MB in the beginning and 107.3MB in the end (delta: -33.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.73ms. Allocated memory is still 132.1MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.01ms. Allocated memory is still 132.1MB. Free memory was 105.7MB in the beginning and 104.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.81ms. Allocated memory is still 132.1MB. Free memory was 104.6MB in the beginning and 95.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4240.16ms. Allocated memory is still 132.1MB. Free memory was 94.7MB in the beginning and 95.9MB in the end (delta: -1.2MB). Peak memory consumption was 826.0kB. Max. memory is 16.1GB. * Witness Printer took 46.24ms. Allocated memory is still 132.1MB. Free memory was 95.9MB in the beginning and 93.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: 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, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 144 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 144 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 69 mSDtfsCounter, 144 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 16 HoareAnnotationTreeSize, 4 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 291 SizeOfPredicates, 18 NumberOfNonLiveVariables, 224 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 5/5 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 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 < d % 4294967296 && m == n - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 < d % 4294967296 RESULT: Ultimate proved your program to be correct! [2021-11-22 14:22:26,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebf6be3-7787-400e-9cdf-1dc3b846cb38/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE