./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg --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 ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:52:05,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:52:05,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:52:06,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:52:06,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:52:06,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:52:06,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:52:06,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:52:06,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:52:06,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:52:06,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:52:06,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:52:06,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:52:06,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:52:06,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:52:06,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:52:06,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:52:06,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:52:06,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:52:06,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:52:06,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:52:06,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:52:06,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:52:06,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:52:06,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:52:06,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:52:06,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:52:06,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:52:06,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:52:06,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:52:06,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:52:06,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:52:06,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:52:06,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:52:06,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:52:06,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:52:06,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:52:06,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:52:06,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:52:06,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:52:06,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:52:06,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:52:06,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:52:06,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:52:06,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:52:06,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:52:06,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:52:06,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:52:06,176 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:52:06,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:52:06,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:52:06,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:52:06,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:52:06,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:52:06,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:52:06,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:52:06,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:52:06,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:52:06,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:52:06,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:52:06,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:52:06,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:52:06,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:52:06,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:52:06,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:52:06,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:52:06,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:52:06,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:52:06,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:52:06,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:52:06,180 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:52:06,180 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:52:06,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:52:06,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:52:06,181 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_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca [2021-10-28 08:52:06,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:52:06,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:52:06,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:52:06,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:52:06,497 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:52:06,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-10-28 08:52:06,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/data/cc885672d/6c7fbd4003d749fbb3a31b539d5fd561/FLAG68cef4b02 [2021-10-28 08:52:07,076 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:52:07,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-10-28 08:52:07,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/data/cc885672d/6c7fbd4003d749fbb3a31b539d5fd561/FLAG68cef4b02 [2021-10-28 08:52:07,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/data/cc885672d/6c7fbd4003d749fbb3a31b539d5fd561 [2021-10-28 08:52:07,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:52:07,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:52:07,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:07,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:52:07,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:52:07,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705e8bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07, skipping insertion in model container [2021-10-28 08:52:07,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:52:07,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:52:07,649 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2021-10-28 08:52:07,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:07,686 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:52:07,697 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2021-10-28 08:52:07,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:07,728 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:52:07,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07 WrapperNode [2021-10-28 08:52:07,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:07,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:07,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:52:07,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:52:07,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:07,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:52:07,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:52:07,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:52:07,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:52:07,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:52:07,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:52:07,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:52:07,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (1/1) ... [2021-10-28 08:52:07,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:52:07,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:07,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:07,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:52:07,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:52:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:52:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:52:07,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:52:10,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:52:10,723 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-28 08:52:10,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:10 BoogieIcfgContainer [2021-10-28 08:52:10,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:52:10,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:52:10,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:52:10,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:52:10,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:52:07" (1/3) ... [2021-10-28 08:52:10,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1921cda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:52:10, skipping insertion in model container [2021-10-28 08:52:10,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:07" (2/3) ... [2021-10-28 08:52:10,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1921cda0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:52:10, skipping insertion in model container [2021-10-28 08:52:10,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:10" (3/3) ... [2021-10-28 08:52:10,734 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2021-10-28 08:52:10,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:52:10,740 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-10-28 08:52:10,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:52:10,796 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 [2021-10-28 08:52:10,796 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-28 08:52:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 40 states have (on average 1.65) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 08:52:10,817 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:10,818 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:10,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:10,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash -578123657, now seen corresponding path program 1 times [2021-10-28 08:52:10,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:10,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514598543] [2021-10-28 08:52:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:10,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:10,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:10,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514598543] [2021-10-28 08:52:10,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514598543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:10,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:10,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:52:10,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672835700] [2021-10-28 08:52:11,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:52:11,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:52:11,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:52:11,017 INFO L87 Difference]: Start difference. First operand has 50 states, 40 states have (on average 1.65) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:11,045 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-10-28 08:52:11,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:52:11,046 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 08:52:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:11,056 INFO L225 Difference]: With dead ends: 97 [2021-10-28 08:52:11,056 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 08:52:11,060 INFO L786 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 [2021-10-28 08:52:11,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 08:52:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-28 08:52:11,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-10-28 08:52:11,100 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2021-10-28 08:52:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:11,102 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-10-28 08:52:11,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-10-28 08:52:11,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:52:11,105 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:11,106 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:11,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:52:11,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:11,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2021-10-28 08:52:11,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:11,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863656727] [2021-10-28 08:52:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:11,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:11,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:11,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863656727] [2021-10-28 08:52:11,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863656727] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:11,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:11,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:11,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697373005] [2021-10-28 08:52:11,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:52:11,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:11,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:52:11,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:52:11,246 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:11,287 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2021-10-28 08:52:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:52:11,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 08:52:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:11,290 INFO L225 Difference]: With dead ends: 87 [2021-10-28 08:52:11,291 INFO L226 Difference]: Without dead ends: 48 [2021-10-28 08:52:11,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:52:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-28 08:52:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-28 08:52:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-10-28 08:52:11,309 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2021-10-28 08:52:11,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:11,310 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-10-28 08:52:11,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-10-28 08:52:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:52:11,311 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:11,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:11,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:52:11,313 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:11,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2021-10-28 08:52:11,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:11,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266643839] [2021-10-28 08:52:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:11,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:11,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:11,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266643839] [2021-10-28 08:52:11,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266643839] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:11,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:11,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:52:11,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903677860] [2021-10-28 08:52:11,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:52:11,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:52:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:52:11,691 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:19,802 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2021-10-28 08:52:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:52:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 08:52:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:19,804 INFO L225 Difference]: With dead ends: 74 [2021-10-28 08:52:19,804 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 08:52:19,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:52:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 08:52:19,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 52. [2021-10-28 08:52:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-10-28 08:52:19,812 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 11 [2021-10-28 08:52:19,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:19,812 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-10-28 08:52:19,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-10-28 08:52:19,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:52:19,814 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:19,814 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:19,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:52:19,815 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:19,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:19,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1083313625, now seen corresponding path program 1 times [2021-10-28 08:52:19,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:19,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407813832] [2021-10-28 08:52:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:19,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:19,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:52:19,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687342603] [2021-10-28 08:52:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:19,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:19,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:19,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:52:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:52:19,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:20,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:20,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407813832] [2021-10-28 08:52:20,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:52:20,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687342603] [2021-10-28 08:52:20,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687342603] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:20,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:20,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:52:20,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783965775] [2021-10-28 08:52:20,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:52:20,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:52:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:52:20,017 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:20,047 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2021-10-28 08:52:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:52:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 08:52:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:20,050 INFO L225 Difference]: With dead ends: 65 [2021-10-28 08:52:20,050 INFO L226 Difference]: Without dead ends: 53 [2021-10-28 08:52:20,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:52:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-28 08:52:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-10-28 08:52:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 51 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2021-10-28 08:52:20,065 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 12 [2021-10-28 08:52:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:20,065 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2021-10-28 08:52:20,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2021-10-28 08:52:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 08:52:20,066 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:20,067 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:20,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:20,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:20,287 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:20,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:20,287 INFO L85 PathProgramCache]: Analyzing trace with hash 776646742, now seen corresponding path program 1 times [2021-10-28 08:52:20,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:20,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581477178] [2021-10-28 08:52:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:20,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:20,305 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:52:20,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826176604] [2021-10-28 08:52:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:20,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:20,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:20,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:20,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 08:52:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:20,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:52:20,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:20,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:20,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581477178] [2021-10-28 08:52:20,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:52:20,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826176604] [2021-10-28 08:52:20,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826176604] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:20,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:20,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:52:20,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97276695] [2021-10-28 08:52:20,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:52:20,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:52:20,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:52:20,531 INFO L87 Difference]: Start difference. First operand 52 states and 57 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) [2021-10-28 08:52:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:21,688 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2021-10-28 08:52:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:52:21,689 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 [2021-10-28 08:52:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:21,690 INFO L225 Difference]: With dead ends: 97 [2021-10-28 08:52:21,690 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 08:52:21,691 INFO L786 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 [2021-10-28 08:52:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 08:52:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2021-10-28 08:52:21,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 68 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-10-28 08:52:21,701 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 13 [2021-10-28 08:52:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:21,702 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-10-28 08:52:21,702 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) [2021-10-28 08:52:21,702 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-10-28 08:52:21,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 08:52:21,703 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:21,703 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:21,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:21,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:21,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:21,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:21,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2047013432, now seen corresponding path program 1 times [2021-10-28 08:52:21,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:21,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924563743] [2021-10-28 08:52:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:21,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:21,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:21,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924563743] [2021-10-28 08:52:21,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924563743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:21,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688366836] [2021-10-28 08:52:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:21,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:21,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 08:52:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:22,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 08:52:22,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:22,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688366836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:22,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:22,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-10-28 08:52:22,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582606106] [2021-10-28 08:52:22,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:52:22,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:22,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:52:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:52:22,118 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:22,141 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2021-10-28 08:52:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:52:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 08:52:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:22,143 INFO L225 Difference]: With dead ends: 127 [2021-10-28 08:52:22,143 INFO L226 Difference]: Without dead ends: 71 [2021-10-28 08:52:22,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:52:22,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-28 08:52:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-28 08:52:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 70 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-10-28 08:52:22,153 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 13 [2021-10-28 08:52:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:22,153 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-10-28 08:52:22,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-10-28 08:52:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:52:22,154 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:22,155 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:22,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:22,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 08:52:22,368 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -918298294, now seen corresponding path program 1 times [2021-10-28 08:52:22,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:22,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942930138] [2021-10-28 08:52:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:22,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:22,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:22,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942930138] [2021-10-28 08:52:22,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942930138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:22,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71985098] [2021-10-28 08:52:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:22,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:22,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 08:52:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:22,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:52:22,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:22,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71985098] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:22,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 08:52:22,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-10-28 08:52:22,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245663259] [2021-10-28 08:52:22,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:52:22,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:52:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:52:22,626 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:22,681 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2021-10-28 08:52:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:52:22,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 08:52:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:22,683 INFO L225 Difference]: With dead ends: 103 [2021-10-28 08:52:22,683 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 08:52:22,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:52:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 08:52:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-28 08:52:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.186046511627907) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-10-28 08:52:22,691 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 14 [2021-10-28 08:52:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:22,692 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-28 08:52:22,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-10-28 08:52:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 08:52:22,693 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:22,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:22,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:22,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:22,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash -966633767, now seen corresponding path program 1 times [2021-10-28 08:52:22,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:22,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097916851] [2021-10-28 08:52:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:22,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:22,919 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:52:22,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102265671] [2021-10-28 08:52:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:22,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:22,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 08:52:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:23,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:52:23,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:23,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:23,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097916851] [2021-10-28 08:52:23,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:52:23,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102265671] [2021-10-28 08:52:23,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102265671] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:23,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:23,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:52:23,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680958100] [2021-10-28 08:52:23,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:52:23,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:23,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:52:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:52:23,251 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:23,688 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2021-10-28 08:52:23,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:52:23,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 08:52:23,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:23,690 INFO L225 Difference]: With dead ends: 55 [2021-10-28 08:52:23,690 INFO L226 Difference]: Without dead ends: 18 [2021-10-28 08:52:23,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:52:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-28 08:52:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-28 08:52:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-28 08:52:23,693 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-10-28 08:52:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:23,693 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-28 08:52:23,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-28 08:52:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 08:52:23,694 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:23,694 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:23,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:23,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:23,895 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-28 08:52:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1597540912, now seen corresponding path program 1 times [2021-10-28 08:52:23,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:23,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364305362] [2021-10-28 08:52:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:23,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:23,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 08:52:23,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847166918] [2021-10-28 08:52:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:23,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:23,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:23,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:23,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 08:52:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:24,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 08:52:24,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 08:52:24,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:24,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364305362] [2021-10-28 08:52:24,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 08:52:24,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847166918] [2021-10-28 08:52:24,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847166918] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:24,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:24,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:52:24,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255671512] [2021-10-28 08:52:24,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:52:24,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:52:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:52:24,150 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2021-10-28 08:52:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:24,169 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-28 08:52:24,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:52:24,169 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 15 [2021-10-28 08:52:24,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:24,169 INFO L225 Difference]: With dead ends: 18 [2021-10-28 08:52:24,169 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:52:24,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:52:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:52:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:52:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:24,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:52:24,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-28 08:52:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:24,170 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:52:24,170 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) [2021-10-28 08:52:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:52:24,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:52:24,172 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,173 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:24,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:24,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 08:52:24,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:52:24,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:52:24,627 INFO L860 garLoopResultBuilder]: At program point L60(lines 20 61) the Hoare annotation is: true [2021-10-28 08:52:24,628 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,628 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-10-28 08:52:24,628 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2021-10-28 08:52:24,628 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,628 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:52:24,628 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:52:24,628 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,629 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-10-28 08:52:24,629 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,629 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-10-28 08:52:24,629 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,629 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-10-28 08:52:24,629 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,630 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-10-28 08:52:24,630 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,630 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-10-28 08:52:24,630 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,630 INFO L853 garLoopResultBuilder]: At program point L12-17(lines 46 47) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-10-28 08:52:24,630 INFO L857 garLoopResultBuilder]: For program point L12-18(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,631 INFO L853 garLoopResultBuilder]: At program point L12-20(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~p~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-10-28 08:52:24,631 INFO L857 garLoopResultBuilder]: For program point L12-21(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,631 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,631 INFO L853 garLoopResultBuilder]: At program point L12-23(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-10-28 08:52:24,631 INFO L857 garLoopResultBuilder]: For program point L12-24(lines 12 15) no Hoare annotation was computed. [2021-10-28 08:52:24,631 INFO L860 garLoopResultBuilder]: At program point L12-26(lines 11 17) the Hoare annotation is: true [2021-10-28 08:52:24,631 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,631 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,631 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,632 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,632 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,632 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,632 INFO L857 garLoopResultBuilder]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,632 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 56) no Hoare annotation was computed. [2021-10-28 08:52:24,632 INFO L857 garLoopResultBuilder]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,632 INFO L857 garLoopResultBuilder]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2021-10-28 08:52:24,632 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 56) no Hoare annotation was computed. [2021-10-28 08:52:24,633 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,633 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2021-10-28 08:52:24,633 INFO L853 garLoopResultBuilder]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~p~0 0)) (.cse1 (= ULTIMATE.start_main_~h~0 0)) (.cse2 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 (<= 1 ~counter~0) .cse1 .cse2) (and .cse0 (= ~counter~0 0) (= ULTIMATE.start_main_~q~0 1) .cse1 .cse2))) [2021-10-28 08:52:24,633 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-10-28 08:52:24,633 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,633 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 08:52:24,634 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,635 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,635 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-28 08:52:24,635 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:52:24,635 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,635 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-28 08:52:24,635 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-28 08:52:24,639 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:24,640 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:52:24,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:52:24 BoogieIcfgContainer [2021-10-28 08:52:24,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:52:24,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:52:24,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:52:24,658 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:52:24,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:10" (3/4) ... [2021-10-28 08:52:24,662 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:52:24,673 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-28 08:52:24,673 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:52:24,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:52:24,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:52:24,715 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:52:24,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:52:24,717 INFO L168 Benchmark]: Toolchain (without parser) took 17276.82 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 85.4 MB in the beginning and 60.4 MB in the end (delta: 25.0 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,717 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 121.6 MB. Free memory was 93.0 MB in the beginning and 93.0 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:24,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.83 ms. Allocated memory is still 121.6 MB. Free memory was 85.4 MB in the beginning and 94.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,718 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 121.6 MB. Free memory was 94.4 MB in the beginning and 92.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,718 INFO L168 Benchmark]: Boogie Preprocessor took 28.60 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 91.4 MB in the end (delta: 893.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:24,719 INFO L168 Benchmark]: RCFGBuilder took 2920.72 ms. Allocated memory is still 121.6 MB. Free memory was 91.4 MB in the beginning and 78.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,719 INFO L168 Benchmark]: TraceAbstraction took 13930.86 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 77.7 MB in the beginning and 63.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,720 INFO L168 Benchmark]: Witness Printer took 57.31 ms. Allocated memory is still 146.8 MB. Free memory was 63.5 MB in the beginning and 60.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 121.6 MB. Free memory was 93.0 MB in the beginning and 93.0 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.83 ms. Allocated memory is still 121.6 MB. Free memory was 85.4 MB in the beginning and 94.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 121.6 MB. Free memory was 94.4 MB in the beginning and 92.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.60 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 91.4 MB in the end (delta: 893.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2920.72 ms. Allocated memory is still 121.6 MB. Free memory was 91.4 MB in the beginning and 78.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13930.86 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 77.7 MB in the beginning and 63.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.1 GB. * Witness Printer took 57.31 ms. Allocated memory is still 146.8 MB. Free memory was 63.5 MB in the beginning and 60.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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, 50 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 13.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 344 SDtfs, 124 SDslu, 532 SDs, 0 SdLazy, 212 SolverSat, 45 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=6, InterpolantAutomatonStates: 42, 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, 9 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 24 NumberOfFragments, 168 HoareAnnotationTreeSize, 11 FomulaSimplifications, 220 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 64 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 562 SizeOfPredicates, 20 NumberOfNonLiveVariables, 434 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 7/13 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 9 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((2 <= counter && p == 0) && q == 1) && h == 0) && !(0 == cond)) && n == r - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((2 <= counter && 1 <= cond) && p == 0) && q == 1) && h == 0) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && p == 0) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((2 <= counter && 1 <= cond) && p == 0) && q == 1) && h == 0) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (p == 0 && !(0 == cond)) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((2 <= counter && 1 <= cond) && p == 0) && q == 1) && h == 0) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((2 <= counter && 1 <= cond) && p == 0) && q == 1) && h == 0) && n == r - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((p == 0 && 1 <= counter) && h == 0) && n == r) || ((((p == 0 && counter == 0) && q == 1) && h == 0) && n == r) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((2 <= counter && 1 <= cond) && p == 0) && q == 1) && h == 0) && n == r RESULT: Ultimate proved your program to be correct! [2021-10-28 08:52:24,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac2fcb3-23f1-4dfd-bd6d-ed7982794441/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...