./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.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_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/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_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/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_b0ec4696-3e15-44a8-abd3-87e104930ba4/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 942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 09:14:33,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:14:33,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:14:33,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:14:33,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:14:33,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:14:33,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:14:33,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:14:33,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:14:33,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:14:33,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:14:33,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:14:33,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:14:33,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:14:33,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:14:34,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:14:34,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:14:34,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:14:34,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:14:34,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:14:34,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:14:34,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:14:34,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:14:34,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:14:34,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:14:34,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:14:34,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:14:34,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:14:34,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:14:34,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:14:34,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:14:34,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:14:34,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:14:34,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:14:34,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:14:34,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:14:34,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:14:34,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:14:34,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:14:34,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:14:34,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:14:34,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:14:34,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:14:34,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:14:34,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:14:34,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:14:34,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:14:34,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:14:34,099 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:14:34,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:14:34,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:14:34,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:14:34,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:14:34,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:14:34,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:14:34,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:14:34,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:14:34,102 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:14:34,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:14:34,103 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:14:34,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:14:34,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:14:34,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:14:34,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:14:34,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:14:34,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:14:34,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:14:34,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:14:34,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:14:34,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:14:34,106 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:14:34,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:14:34,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:14:34,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:14:34,108 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_b0ec4696-3e15-44a8-abd3-87e104930ba4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 942b28ff7c0583b7db8395d2c315e70afc8fe68ba69d39faf867ac75d7628edb [2021-10-28 09:14:34,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:14:34,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:14:34,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:14:34,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:14:34,494 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:14:34,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-10-28 09:14:34,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/data/d4c75962b/7707093e5bf14e7cabbafcf7577854ee/FLAGcf1abfe97 [2021-10-28 09:14:35,106 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:14:35,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-10-28 09:14:35,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/data/d4c75962b/7707093e5bf14e7cabbafcf7577854ee/FLAGcf1abfe97 [2021-10-28 09:14:35,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/data/d4c75962b/7707093e5bf14e7cabbafcf7577854ee [2021-10-28 09:14:35,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:14:35,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:14:35,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:14:35,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:14:35,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:14:35,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a49f004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35, skipping insertion in model container [2021-10-28 09:14:35,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:14:35,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:14:35,728 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_b0ec4696-3e15-44a8-abd3-87e104930ba4/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2021-10-28 09:14:35,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:14:35,781 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:14:35,800 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_b0ec4696-3e15-44a8-abd3-87e104930ba4/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2021-10-28 09:14:35,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:14:35,849 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:14:35,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35 WrapperNode [2021-10-28 09:14:35,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:14:35,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:14:35,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:14:35,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:14:35,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:14:35,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:14:35,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:14:35,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:14:35,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:14:35,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:14:35,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:14:35,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:14:35,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (1/1) ... [2021-10-28 09:14:35,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:14:35,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:36,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:14:36,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:14:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:14:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:14:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:14:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:14:36,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:14:36,501 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-10-28 09:14:36,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:14:36 BoogieIcfgContainer [2021-10-28 09:14:36,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:14:36,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:14:36,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:14:36,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:14:36,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:14:35" (1/3) ... [2021-10-28 09:14:36,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346eeef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:14:36, skipping insertion in model container [2021-10-28 09:14:36,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:14:35" (2/3) ... [2021-10-28 09:14:36,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346eeef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:14:36, skipping insertion in model container [2021-10-28 09:14:36,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:14:36" (3/3) ... [2021-10-28 09:14:36,513 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2021-10-28 09:14:36,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:14:36,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-28 09:14:36,569 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:14:36,576 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 09:14:36,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-28 09:14:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:14:36,599 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:36,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:36,600 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:36,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:36,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-28 09:14:36,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:36,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586184924] [2021-10-28 09:14:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:36,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:36,810 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 09:14:36,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:36,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586184924] [2021-10-28 09:14:36,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586184924] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:36,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:36,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:14:36,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074363518] [2021-10-28 09:14:36,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:14:36,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:14:36,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:14:36,849 INFO L87 Difference]: Start difference. First operand has 53 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:36,870 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-10-28 09:14:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:14:36,871 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 09:14:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:36,880 INFO L225 Difference]: With dead ends: 103 [2021-10-28 09:14:36,880 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 09:14:36,883 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 09:14:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 09:14:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 09:14:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-28 09:14:36,920 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2021-10-28 09:14:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:36,921 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-28 09:14:36,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-28 09:14:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:14:36,922 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:36,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:36,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:14:36,923 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-28 09:14:36,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:36,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697383003] [2021-10-28 09:14:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:36,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:37,032 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 09:14:37,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:37,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697383003] [2021-10-28 09:14:37,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697383003] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:37,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:37,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:14:37,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767187296] [2021-10-28 09:14:37,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:14:37,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:14:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:14:37,039 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:37,201 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-10-28 09:14:37,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:14:37,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 09:14:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:37,203 INFO L225 Difference]: With dead ends: 50 [2021-10-28 09:14:37,203 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 09:14:37,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:14:37,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 09:14:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-10-28 09:14:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.25) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-10-28 09:14:37,213 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2021-10-28 09:14:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:37,213 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-10-28 09:14:37,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-10-28 09:14:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:14:37,214 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:37,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:37,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:14:37,215 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:37,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:37,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-28 09:14:37,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:37,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446099811] [2021-10-28 09:14:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:37,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:37,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:37,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001741666] [2021-10-28 09:14:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:37,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:37,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:37,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:37,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:14:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:37,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:14:37,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:37,431 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 09:14:37,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:37,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446099811] [2021-10-28 09:14:37,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:37,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001741666] [2021-10-28 09:14:37,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001741666] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:37,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:37,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:14:37,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140533463] [2021-10-28 09:14:37,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:14:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:14:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:14:37,435 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:37,600 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-10-28 09:14:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:14:37,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 09:14:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:37,602 INFO L225 Difference]: With dead ends: 86 [2021-10-28 09:14:37,602 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 09:14:37,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 09:14:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 09:14:37,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-10-28 09:14:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.225) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-10-28 09:14:37,615 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-10-28 09:14:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:37,615 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-10-28 09:14:37,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-10-28 09:14:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:14:37,620 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:37,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:37,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:37,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:37,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:37,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-28 09:14:37,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:37,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285054865] [2021-10-28 09:14:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:37,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:37,853 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:37,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912384889] [2021-10-28 09:14:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:37,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:37,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:37,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:14:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:37,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:14:37,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:38,115 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 09:14:38,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:38,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285054865] [2021-10-28 09:14:38,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:38,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912384889] [2021-10-28 09:14:38,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912384889] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:38,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:38,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:14:38,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126407986] [2021-10-28 09:14:38,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:14:38,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:38,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:14:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:14:38,118 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:38,255 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-10-28 09:14:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:14:38,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 09:14:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:38,261 INFO L225 Difference]: With dead ends: 84 [2021-10-28 09:14:38,262 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 09:14:38,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 09:14:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 09:14:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-28 09:14:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-28 09:14:38,274 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 11 [2021-10-28 09:14:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:38,274 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-28 09:14:38,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-28 09:14:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:14:38,275 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:38,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:38,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:38,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-28 09:14:38,500 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2021-10-28 09:14:38,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:38,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639085097] [2021-10-28 09:14:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:38,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:38,515 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:38,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738886646] [2021-10-28 09:14:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:38,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:38,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:38,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:38,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:14:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:38,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:14:38,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:38,708 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 09:14:38,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:38,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639085097] [2021-10-28 09:14:38,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:38,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738886646] [2021-10-28 09:14:38,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738886646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:38,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:38,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:14:38,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827003195] [2021-10-28 09:14:38,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:14:38,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:14:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:14:38,712 INFO L87 Difference]: Start difference. First operand 60 states and 63 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 09:14:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:38,833 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-10-28 09:14:38,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:14:38,837 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 09:14:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:38,838 INFO L225 Difference]: With dead ends: 81 [2021-10-28 09:14:38,839 INFO L226 Difference]: Without dead ends: 57 [2021-10-28 09:14:38,839 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 09:14:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-28 09:14:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-10-28 09:14:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 09:14:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-10-28 09:14:38,877 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2021-10-28 09:14:38,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:38,877 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-10-28 09:14:38,878 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 09:14:38,878 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-10-28 09:14:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:14:38,879 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:38,879 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:38,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:39,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:39,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:39,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2021-10-28 09:14:39,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:39,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125173341] [2021-10-28 09:14:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:39,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:39,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:39,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72830931] [2021-10-28 09:14:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:39,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:39,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:39,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:39,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:14:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:39,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:14:39,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:14:39,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:39,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125173341] [2021-10-28 09:14:39,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:39,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72830931] [2021-10-28 09:14:39,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72830931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:14:39,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:14:39,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:14:39,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640142434] [2021-10-28 09:14:39,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:14:39,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:14:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:14:39,385 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:39,509 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-10-28 09:14:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:14:39,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 09:14:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:39,511 INFO L225 Difference]: With dead ends: 97 [2021-10-28 09:14:39,511 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 09:14:39,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:14:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 09:14:39,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 60. [2021-10-28 09:14:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 59 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 09:14:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-10-28 09:14:39,521 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 20 [2021-10-28 09:14:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:39,521 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-10-28 09:14:39,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-10-28 09:14:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:14:39,522 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:39,523 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:39,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:39,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:14:39,748 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:39,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2021-10-28 09:14:39,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:39,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552980292] [2021-10-28 09:14:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:39,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:39,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:39,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479471133] [2021-10-28 09:14:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:39,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:39,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:39,761 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:39,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:14:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:39,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:14:39,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:14:40,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:40,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552980292] [2021-10-28 09:14:40,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:40,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479471133] [2021-10-28 09:14:40,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479471133] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:14:40,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:14:40,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:14:40,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225863210] [2021-10-28 09:14:40,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:14:40,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:14:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:14:40,085 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:40,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:40,237 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-10-28 09:14:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:14:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-28 09:14:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:40,240 INFO L225 Difference]: With dead ends: 95 [2021-10-28 09:14:40,240 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 09:14:40,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:14:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 09:14:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 62. [2021-10-28 09:14:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.169811320754717) internal successors, (62), 61 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-10-28 09:14:40,266 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 22 [2021-10-28 09:14:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:40,267 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-10-28 09:14:40,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:40,268 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-10-28 09:14:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:14:40,270 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:40,270 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:40,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:40,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 09:14:40,486 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1484403939, now seen corresponding path program 1 times [2021-10-28 09:14:40,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:40,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414039302] [2021-10-28 09:14:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:40,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:40,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:40,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984188608] [2021-10-28 09:14:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:40,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:40,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:40,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:40,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:14:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:40,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:14:40,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:14:40,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:40,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414039302] [2021-10-28 09:14:40,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:40,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984188608] [2021-10-28 09:14:40,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984188608] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:14:40,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:14:40,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:14:40,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185249198] [2021-10-28 09:14:40,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:14:40,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:40,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:14:40,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:14:40,814 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:40,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:40,933 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-10-28 09:14:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:14:40,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 09:14:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:40,936 INFO L225 Difference]: With dead ends: 93 [2021-10-28 09:14:40,937 INFO L226 Difference]: Without dead ends: 87 [2021-10-28 09:14:40,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:14:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-28 09:14:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2021-10-28 09:14:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-10-28 09:14:40,948 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 24 [2021-10-28 09:14:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:40,949 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-10-28 09:14:40,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-10-28 09:14:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:14:40,954 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:40,954 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:40,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:41,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:41,167 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:41,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:41,168 INFO L85 PathProgramCache]: Analyzing trace with hash -582886304, now seen corresponding path program 1 times [2021-10-28 09:14:41,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:41,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138809850] [2021-10-28 09:14:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:41,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:41,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:41,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663326350] [2021-10-28 09:14:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:41,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:41,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:41,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:41,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:14:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:41,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:14:41,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:14:41,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:41,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138809850] [2021-10-28 09:14:41,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:41,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663326350] [2021-10-28 09:14:41,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663326350] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:14:41,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:14:41,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:14:41,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251495223] [2021-10-28 09:14:41,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:14:41,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:41,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:14:41,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:14:41,536 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:14:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:41,711 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-10-28 09:14:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:14:41,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-10-28 09:14:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:41,713 INFO L225 Difference]: With dead ends: 88 [2021-10-28 09:14:41,713 INFO L226 Difference]: Without dead ends: 82 [2021-10-28 09:14:41,713 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:14:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-28 09:14:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-10-28 09:14:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 09:14:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-10-28 09:14:41,721 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 26 [2021-10-28 09:14:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:41,721 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-10-28 09:14:41,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:14:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-10-28 09:14:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:14:41,722 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:41,722 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:41,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:41,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:41,926 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2021-10-28 09:14:41,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:41,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833022522] [2021-10-28 09:14:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:41,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:41,939 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:41,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29678150] [2021-10-28 09:14:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:41,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:41,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:41,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:41,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:14:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:42,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:14:42,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:14:42,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:42,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833022522] [2021-10-28 09:14:42,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:42,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29678150] [2021-10-28 09:14:42,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29678150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:14:42,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:14:42,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:14:42,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440602356] [2021-10-28 09:14:42,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:14:42,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:14:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:14:42,623 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:42,812 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-10-28 09:14:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:14:42,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-28 09:14:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:42,815 INFO L225 Difference]: With dead ends: 81 [2021-10-28 09:14:42,816 INFO L226 Difference]: Without dead ends: 79 [2021-10-28 09:14:42,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:14:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-28 09:14:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2021-10-28 09:14:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2021-10-28 09:14:42,823 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2021-10-28 09:14:42,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:42,823 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2021-10-28 09:14:42,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:42,823 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2021-10-28 09:14:42,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:14:42,824 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:42,825 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:42,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:43,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:14:43,047 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2021-10-28 09:14:43,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:43,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741162869] [2021-10-28 09:14:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:43,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:43,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:43,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932504578] [2021-10-28 09:14:43,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:14:43,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:43,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:43,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:43,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:14:43,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:14:43,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:14:43,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:14:43,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:14:43,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:43,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741162869] [2021-10-28 09:14:43,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:43,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932504578] [2021-10-28 09:14:43,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932504578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:14:43,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:14:43,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:14:43,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445594705] [2021-10-28 09:14:43,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:14:43,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:14:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:14:43,590 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:43,798 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-10-28 09:14:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:14:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-28 09:14:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:43,800 INFO L225 Difference]: With dead ends: 120 [2021-10-28 09:14:43,800 INFO L226 Difference]: Without dead ends: 118 [2021-10-28 09:14:43,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:14:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-28 09:14:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 79. [2021-10-28 09:14:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 78 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 09:14:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2021-10-28 09:14:43,808 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 31 [2021-10-28 09:14:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:43,809 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2021-10-28 09:14:43,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2021-10-28 09:14:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:14:43,810 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:43,810 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:43,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:44,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:44,011 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:44,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:44,011 INFO L85 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2021-10-28 09:14:44,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:44,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864343503] [2021-10-28 09:14:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:44,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:44,024 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:44,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276241558] [2021-10-28 09:14:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:44,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:44,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:44,026 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:44,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:14:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:14:44,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:14:44,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:44,731 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:14:44,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:44,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864343503] [2021-10-28 09:14:44,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:44,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276241558] [2021-10-28 09:14:44,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276241558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:14:44,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:14:44,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:14:44,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655633722] [2021-10-28 09:14:44,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:14:44,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:14:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:14:44,734 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:44,903 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-10-28 09:14:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:14:44,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 09:14:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:44,905 INFO L225 Difference]: With dead ends: 83 [2021-10-28 09:14:44,905 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 09:14:44,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:14:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 09:14:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-10-28 09:14:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-10-28 09:14:44,913 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 33 [2021-10-28 09:14:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:44,913 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-10-28 09:14:44,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-10-28 09:14:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:14:44,915 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:44,915 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:44,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:45,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 09:14:45,140 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2021-10-28 09:14:45,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:45,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417092264] [2021-10-28 09:14:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:45,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:45,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:45,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067171220] [2021-10-28 09:14:45,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:14:45,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:45,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:45,154 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:45,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:14:45,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:14:45,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:14:45,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 09:14:45,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:14:45,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:45,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417092264] [2021-10-28 09:14:45,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:45,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067171220] [2021-10-28 09:14:45,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067171220] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:14:45,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:14:45,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:14:45,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320023884] [2021-10-28 09:14:45,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:14:45,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:14:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:14:45,838 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:14:46,329 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2021-10-28 09:14:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:14:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-28 09:14:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:14:46,330 INFO L225 Difference]: With dead ends: 116 [2021-10-28 09:14:46,330 INFO L226 Difference]: Without dead ends: 104 [2021-10-28 09:14:46,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:14:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-28 09:14:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2021-10-28 09:14:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.140625) internal successors, (73), 72 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-10-28 09:14:46,337 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 33 [2021-10-28 09:14:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:14:46,338 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-10-28 09:14:46,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:14:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-10-28 09:14:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 09:14:46,339 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:14:46,339 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:14:46,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:14:46,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:14:46,556 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:14:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:14:46,556 INFO L85 PathProgramCache]: Analyzing trace with hash -517562664, now seen corresponding path program 2 times [2021-10-28 09:14:46,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:14:46,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440998009] [2021-10-28 09:14:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:14:46,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:14:46,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:14:46,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452271706] [2021-10-28 09:14:46,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:14:46,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:14:46,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:14:46,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:14:46,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:14:46,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:14:46,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:14:46,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:14:46,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:14:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 09:14:54,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:14:54,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440998009] [2021-10-28 09:14:54,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:14:54,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452271706] [2021-10-28 09:14:54,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452271706] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:14:54,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:14:54,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:14:54,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849281077] [2021-10-28 09:14:54,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:14:54,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:14:54,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:14:54,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2021-10-28 09:14:54,270 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:15:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:10,970 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-10-28 09:15:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:15:10,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-28 09:15:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:15:10,971 INFO L225 Difference]: With dead ends: 73 [2021-10-28 09:15:10,971 INFO L226 Difference]: Without dead ends: 71 [2021-10-28 09:15:10,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=53, Invalid=128, Unknown=1, NotChecked=0, Total=182 [2021-10-28 09:15:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-28 09:15:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-28 09:15:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.126984126984127) internal successors, (71), 70 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:15:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-10-28 09:15:10,981 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 35 [2021-10-28 09:15:10,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:15:10,981 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-10-28 09:15:10,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:15:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-10-28 09:15:10,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:15:10,982 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:15:10,982 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:11,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-28 09:15:11,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:15:11,183 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:15:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:11,183 INFO L85 PathProgramCache]: Analyzing trace with hash 838643035, now seen corresponding path program 2 times [2021-10-28 09:15:11,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:11,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580251317] [2021-10-28 09:15:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:11,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:11,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:15:11,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594001896] [2021-10-28 09:15:11,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:15:11,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:11,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:11,202 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:11,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:15:11,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:15:11,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:15:11,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:15:11,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 09:15:15,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:15,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580251317] [2021-10-28 09:15:15,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:15:15,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594001896] [2021-10-28 09:15:15,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594001896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:15:15,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:15:15,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:15:15,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095384797] [2021-10-28 09:15:15,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:15:15,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:15,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:15:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:15:15,805 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:15:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:34,279 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-10-28 09:15:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:15:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 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 37 [2021-10-28 09:15:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:15:34,280 INFO L225 Difference]: With dead ends: 71 [2021-10-28 09:15:34,280 INFO L226 Difference]: Without dead ends: 65 [2021-10-28 09:15:34,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:15:34,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-28 09:15:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-28 09:15:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 64 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:15:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-10-28 09:15:34,289 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 37 [2021-10-28 09:15:34,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:15:34,290 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-10-28 09:15:34,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 09:15:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-10-28 09:15:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-28 09:15:34,291 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:15:34,291 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:34,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-28 09:15:34,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:15:34,508 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:15:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2021-10-28 09:15:34,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:34,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096537710] [2021-10-28 09:15:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:34,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:34,516 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:15:34,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609056995] [2021-10-28 09:15:34,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:15:34,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:34,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:34,518 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:34,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:15:34,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:15:34,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:15:34,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-28 09:15:34,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:15:35,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:35,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096537710] [2021-10-28 09:15:35,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:15:35,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609056995] [2021-10-28 09:15:35,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609056995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:35,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:15:35,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:15:35,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389793316] [2021-10-28 09:15:35,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:15:35,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:15:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:15:35,761 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 09:15:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:36,162 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-10-28 09:15:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:15:36,162 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-10-28 09:15:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:15:36,163 INFO L225 Difference]: With dead ends: 91 [2021-10-28 09:15:36,163 INFO L226 Difference]: Without dead ends: 71 [2021-10-28 09:15:36,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:15:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-28 09:15:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-10-28 09:15:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 69 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 09:15:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-10-28 09:15:36,186 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 42 [2021-10-28 09:15:36,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:15:36,186 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-10-28 09:15:36,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 09:15:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-10-28 09:15:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:15:36,188 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:15:36,188 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:36,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:36,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:36,395 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:15:36,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash -851717222, now seen corresponding path program 3 times [2021-10-28 09:15:36,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:36,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922337465] [2021-10-28 09:15:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:36,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:36,414 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:15:36,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582499101] [2021-10-28 09:15:36,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:15:36,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:36,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:36,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:36,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:15:36,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:15:36,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:15:36,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 09:15:36,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-28 09:15:37,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:37,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922337465] [2021-10-28 09:15:37,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:15:37,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582499101] [2021-10-28 09:15:37,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582499101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:37,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:15:37,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 09:15:37,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265753375] [2021-10-28 09:15:37,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:15:37,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:15:37,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:15:37,519 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:15:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:15:49,910 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-10-28 09:15:49,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:15:49,911 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-28 09:15:49,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:15:49,912 INFO L225 Difference]: With dead ends: 70 [2021-10-28 09:15:49,912 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 09:15:49,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:15:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 09:15:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-28 09:15:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 61 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:15:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-10-28 09:15:49,922 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 44 [2021-10-28 09:15:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:15:49,922 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-10-28 09:15:49,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:15:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-10-28 09:15:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:15:49,923 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:15:49,923 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:15:49,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:15:50,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 09:15:50,124 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:15:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:15:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1402807763, now seen corresponding path program 3 times [2021-10-28 09:15:50,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:15:50,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466050018] [2021-10-28 09:15:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:15:50,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:15:50,135 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:15:50,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186569023] [2021-10-28 09:15:50,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:15:50,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:15:50,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:15:50,143 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:15:50,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:15:50,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:15:50,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:15:50,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-28 09:15:50,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:15:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-28 09:15:57,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:15:57,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466050018] [2021-10-28 09:15:57,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:15:57,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186569023] [2021-10-28 09:15:57,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186569023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:15:57,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:15:57,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-10-28 09:15:57,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4079058] [2021-10-28 09:15:57,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 09:15:57,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:15:57,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 09:15:57,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=296, Unknown=2, NotChecked=0, Total=380 [2021-10-28 09:15:57,590 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:16:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:16:51,613 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-10-28 09:16:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:16:51,620 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-28 09:16:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:16:51,620 INFO L225 Difference]: With dead ends: 62 [2021-10-28 09:16:51,621 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:16:51,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=139, Invalid=410, Unknown=3, NotChecked=0, Total=552 [2021-10-28 09:16:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:16:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:16:51,622 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 09:16:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:16:51,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2021-10-28 09:16:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:16:51,623 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:16:51,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:16:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:16:51,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:16:51,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:51,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:16:51,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:16:51,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:16:51,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:51,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:52,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:52,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:52,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:54,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,647 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-28 09:16:54,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:16:54,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:16:54,647 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-28 09:16:54,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,648 INFO L860 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2021-10-28 09:16:54,648 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,648 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,648 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-28 09:16:54,648 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,648 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-28 09:16:54,648 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,649 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-28 09:16:54,649 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,649 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-28 09:16:54,649 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,649 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 39 40) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-10-28 09:16:54,649 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,650 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:16:54,650 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 0 ULTIMATE.start_main_~a~0)) (.cse1 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (<= 1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 8) .cse0 (< ULTIMATE.start_main_~a~0 2) (= 19 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~z~0 18) .cse1) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) .cse0 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse2 .cse1 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) (< ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~n~0)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (< ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~z~0 12) .cse2 (= ULTIMATE.start_main_~n~0 1)) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1 (= ULTIMATE.start_main_~n~0 0)))) [2021-10-28 09:16:54,650 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,650 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (let ((.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~a~0)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (< ULTIMATE.start_main_~a~0 1) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~n~0 1)) (and (<= 1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 8) .cse4 (< ULTIMATE.start_main_~a~0 2) (= 19 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~z~0 18) .cse3) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) .cse4 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse1 .cse3 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) (< ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~n~0)) (and (= ULTIMATE.start_main_~x~0 0) .cse0 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse2 .cse3))) [2021-10-28 09:16:54,651 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,651 INFO L857 garLoopResultBuilder]: For program point L15-21(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,651 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,651 INFO L853 garLoopResultBuilder]: At program point L15-23(lines 14 20) the Hoare annotation is: (let ((.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 0 ULTIMATE.start_main_~a~0))) (or (and (= ULTIMATE.start_main_~x~0 0) .cse0 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse1) (and (<= 1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 8) .cse2 (< ULTIMATE.start_main_~a~0 2) (= 19 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~z~0 18) .cse1) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) .cse2 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse3 .cse1 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) (< ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~n~0)) (and .cse0 (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (< ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~z~0 12) .cse3 (= ULTIMATE.start_main_~n~0 1)))) [2021-10-28 09:16:54,651 INFO L857 garLoopResultBuilder]: For program point L15-24(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,652 INFO L853 garLoopResultBuilder]: At program point L15-26(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse0) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (= ULTIMATE.start_main_~z~0 12) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~n~0 1)))) [2021-10-28 09:16:54,652 INFO L857 garLoopResultBuilder]: For program point L15-27(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,652 INFO L853 garLoopResultBuilder]: At program point L15-29(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) (* 18 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse0) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 12) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0))) [2021-10-28 09:16:54,652 INFO L857 garLoopResultBuilder]: For program point L15-30(lines 15 18) no Hoare annotation was computed. [2021-10-28 09:16:54,652 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,653 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,653 INFO L860 garLoopResultBuilder]: At program point L15-32(lines 14 20) the Hoare annotation is: true [2021-10-28 09:16:54,653 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,653 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,653 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,653 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,653 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,654 INFO L857 garLoopResultBuilder]: For program point L16-7(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,654 INFO L857 garLoopResultBuilder]: For program point L16-8(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,654 INFO L857 garLoopResultBuilder]: For program point L16-9(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,654 INFO L857 garLoopResultBuilder]: For program point L16-10(lines 16 17) no Hoare annotation was computed. [2021-10-28 09:16:54,654 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:16:54,654 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,655 INFO L853 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~a~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse4 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse2 .cse3 .cse4) (and .cse0 .cse1 (= ULTIMATE.start_main_~y~0 (let ((.cse5 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse5 .cse5)) (* 3 .cse5) 1))) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~n~0 0)))) [2021-10-28 09:16:54,655 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 33 46) no Hoare annotation was computed. [2021-10-28 09:16:54,655 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,655 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-28 09:16:54,658 INFO L731 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:54,660 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:16:54,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:16:54 BoogieIcfgContainer [2021-10-28 09:16:54,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:16:54,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:16:54,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:16:54,688 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:16:54,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:14:36" (3/4) ... [2021-10-28 09:16:54,691 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:16:54,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-28 09:16:54,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:16:54,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:16:54,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:16:54,753 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:16:54,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:16:54,755 INFO L168 Benchmark]: Toolchain (without parser) took 139261.23 ms. Allocated memory was 109.1 MB in the beginning and 167.8 MB in the end (delta: 58.7 MB). Free memory was 74.6 MB in the beginning and 130.9 MB in the end (delta: -56.2 MB). Peak memory consumption was 94.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,755 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 92.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:16:54,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.99 ms. Allocated memory is still 109.1 MB. Free memory was 74.6 MB in the beginning and 85.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.31 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 83.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,756 INFO L168 Benchmark]: Boogie Preprocessor took 52.39 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 82.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,757 INFO L168 Benchmark]: RCFGBuilder took 530.11 ms. Allocated memory is still 109.1 MB. Free memory was 82.4 MB in the beginning and 70.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,757 INFO L168 Benchmark]: TraceAbstraction took 138181.77 ms. Allocated memory was 109.1 MB in the beginning and 167.8 MB in the end (delta: 58.7 MB). Free memory was 70.2 MB in the beginning and 39.9 MB in the end (delta: 30.3 MB). Peak memory consumption was 91.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,758 INFO L168 Benchmark]: Witness Printer took 65.81 ms. Allocated memory is still 167.8 MB. Free memory was 39.9 MB in the beginning and 130.9 MB in the end (delta: -90.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 109.1 MB. Free memory is still 92.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.99 ms. Allocated memory is still 109.1 MB. Free memory was 74.6 MB in the beginning and 85.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.31 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 83.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.39 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 82.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 530.11 ms. Allocated memory is still 109.1 MB. Free memory was 82.4 MB in the beginning and 70.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 138181.77 ms. Allocated memory was 109.1 MB in the beginning and 167.8 MB in the end (delta: 58.7 MB). Free memory was 70.2 MB in the beginning and 39.9 MB in the end (delta: 30.3 MB). Peak memory consumption was 91.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.81 ms. Allocated memory is still 167.8 MB. Free memory was 39.9 MB in the beginning and 130.9 MB in the end (delta: -90.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 138.0s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 104.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 717 SDslu, 1110 SDs, 0 SdLazy, 1792 SolverSat, 372 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 88.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 505 GetRequests, 368 SyntacticMatches, 6 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 27.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=11, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 217 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 59 NumberOfFragments, 832 HoareAnnotationTreeSize, 13 FomulaSimplifications, 19245 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 1218 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 478 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 460 ConstructedInterpolants, 0 QuantifiedInterpolants, 4756 SizeOfPredicates, 118 NumberOfNonLiveVariables, 1593 ConjunctsInSsa, 334 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 170/300 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 11 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((1 <= a && x == 8) && 1 == cond) && a < 2) && 19 == y) && z == 18) && z == 6 * n + 6) || ((((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && a < n)) || ((((((1 <= cond && x == 1) && y == 7) && a < 1) && z == 12) && 0 <= a) && n == 1)) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) || ((((((cond == 1 && a <= 2) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && n == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((1 == cond && 6 + 12 * y + 18 * x == z * y + 2 * z) && z == 6 * n + 6) && x == n * n * n) || ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6)) || (((x == 1 && z == 12) && !(0 == cond)) && z == 6 * n + 6) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((1 <= cond && x == 1) && y == 7) && a < 1) && 0 <= a) && !(0 == cond)) && z == 6 * n + 6) && n == 1) || ((((((1 <= a && x == 8) && 1 == cond) && a < 2) && 19 == y) && z == 18) && z == 6 * n + 6)) || ((((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && a < n)) || (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && !(0 == cond)) && z == 6 * n + 6) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || (((1 == cond && y == 3 * n + 3 * (n * n) + 1) && z == 6 * n + 6) && x == n * n * n)) || ((((x == 1 && y == 7) && z == 12) && !(0 == cond)) && n == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || ((((((1 <= a && x == 8) && 1 == cond) && a < 2) && 19 == y) && z == 18) && z == 6 * n + 6)) || ((((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && n <= a + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && a < n)) || ((((((1 <= cond && x == 1) && y == 7) && a < 1) && z == 12) && 0 <= a) && n == 1) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:16:54,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec4696-3e15-44a8-abd3-87e104930ba4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...