./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a --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 bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 09:09:33,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:09:33,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:09:33,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:09:33,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:09:33,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:09:33,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:09:33,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:09:33,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:09:33,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:09:33,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:09:33,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:09:33,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:09:33,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:09:33,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:09:33,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:09:33,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:09:33,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:09:33,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:09:33,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:09:33,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:09:33,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:09:33,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:09:33,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:09:33,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:09:33,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:09:33,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:09:33,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:09:33,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:09:33,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:09:33,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:09:33,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:09:33,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:09:33,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:09:33,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:09:33,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:09:33,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:09:33,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:09:33,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:09:33,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:09:33,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:09:33,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:09:33,772 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:09:33,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:09:33,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:09:33,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:09:33,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:09:33,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:09:33,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:09:33,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:09:33,775 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:09:33,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:09:33,776 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:09:33,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:09:33,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:09:33,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:09:33,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:09:33,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:09:33,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:09:33,778 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:09:33,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:09:33,778 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:09:33,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:09:33,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:09:33,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:09:33,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:09:33,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:09:33,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:09:33,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:09:33,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:09:33,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:09:33,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:09:33,780 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:09:33,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:09:33,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:09:33,781 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_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2022-11-21 09:09:34,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:09:34,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:09:34,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:09:34,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:09:34,145 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:09:34,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-11-21 09:09:37,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:09:37,863 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:09:37,864 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-11-21 09:09:37,872 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/data/73b8fc6ad/73340ff839c94a22bf529137ace364bb/FLAG2db3e3473 [2022-11-21 09:09:37,898 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/data/73b8fc6ad/73340ff839c94a22bf529137ace364bb [2022-11-21 09:09:37,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:09:37,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:09:37,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:09:37,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:09:37,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:09:37,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:09:37" (1/1) ... [2022-11-21 09:09:37,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212d2cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:37, skipping insertion in model container [2022-11-21 09:09:37,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:09:37" (1/1) ... [2022-11-21 09:09:37,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:09:37,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:09:38,168 WARN L237 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_637dc45f-a2ed-4183-8ac3-a28f6f45122a/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-11-21 09:09:38,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:09:38,209 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:09:38,221 WARN L237 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_637dc45f-a2ed-4183-8ac3-a28f6f45122a/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2022-11-21 09:09:38,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:09:38,249 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:09:38,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38 WrapperNode [2022-11-21 09:09:38,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:09:38,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:09:38,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:09:38,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:09:38,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,294 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-11-21 09:09:38,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:09:38,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:09:38,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:09:38,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:09:38,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,336 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:09:38,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:09:38,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:09:38,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:09:38,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (1/1) ... [2022-11-21 09:09:38,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:09:38,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:38,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:09:38,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:09:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:09:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 09:09:38,434 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 09:09:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:09:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:09:38,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:09:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 09:09:38,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 09:09:38,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:09:38,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:09:38,795 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:09:38,802 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:09:38,802 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 09:09:38,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:09:38 BoogieIcfgContainer [2022-11-21 09:09:38,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:09:38,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:09:38,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:09:38,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:09:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:09:37" (1/3) ... [2022-11-21 09:09:38,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311b1e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:09:38, skipping insertion in model container [2022-11-21 09:09:38,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:09:38" (2/3) ... [2022-11-21 09:09:38,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311b1e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:09:38, skipping insertion in model container [2022-11-21 09:09:38,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:09:38" (3/3) ... [2022-11-21 09:09:38,817 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2022-11-21 09:09:38,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:09:38,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:09:38,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:09:38,943 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7358eca1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:09:38,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:09:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-21 09:09:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 09:09:38,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:38,962 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:38,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2022-11-21 09:09:38,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:38,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363983134] [2022-11-21 09:09:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:39,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:39,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363983134] [2022-11-21 09:09:39,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 09:09:39,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801171085] [2022-11-21 09:09:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:39,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:39,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:39,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:39,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 09:09:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:39,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 09:09:39,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-21 09:09:39,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:09:39,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801171085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:39,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:39,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:09:39,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103966752] [2022-11-21 09:09:39,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:39,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 09:09:39,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:39,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 09:09:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:09:39,442 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 09:09:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:39,493 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2022-11-21 09:09:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 09:09:39,496 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-11-21 09:09:39,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:39,504 INFO L225 Difference]: With dead ends: 67 [2022-11-21 09:09:39,504 INFO L226 Difference]: Without dead ends: 31 [2022-11-21 09:09:39,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 09:09:39,513 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:39,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:09:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-21 09:09:39,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-21 09:09:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-21 09:09:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-11-21 09:09:39,567 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2022-11-21 09:09:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:39,567 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-11-21 09:09:39,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 09:09:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-11-21 09:09:39,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 09:09:39,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:39,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:39,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:39,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:39,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2022-11-21 09:09:39,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:39,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9164501] [2022-11-21 09:09:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:39,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:39,818 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:39,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832572576] [2022-11-21 09:09:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:39,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:39,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:39,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:39,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 09:09:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:39,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 09:09:39,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 09:09:40,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:09:40,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:40,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9164501] [2022-11-21 09:09:40,065 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:40,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832572576] [2022-11-21 09:09:40,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832572576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:40,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:40,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:09:40,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104674683] [2022-11-21 09:09:40,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:40,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:09:40,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:40,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:09:40,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:09:40,068 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-21 09:09:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:40,249 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-11-21 09:09:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:09:40,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-11-21 09:09:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:40,252 INFO L225 Difference]: With dead ends: 50 [2022-11-21 09:09:40,252 INFO L226 Difference]: Without dead ends: 43 [2022-11-21 09:09:40,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:09:40,255 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:40,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 113 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:09:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-21 09:09:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2022-11-21 09:09:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-21 09:09:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-21 09:09:40,270 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2022-11-21 09:09:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:40,271 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-21 09:09:40,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-21 09:09:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-21 09:09:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-21 09:09:40,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:40,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:40,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:40,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:40,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2022-11-21 09:09:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:40,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736220178] [2022-11-21 09:09:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:40,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:40,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161244061] [2022-11-21 09:09:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:40,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:40,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:40,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:40,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 09:09:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:40,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-21 09:09:40,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 09:09:41,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 09:09:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:41,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736220178] [2022-11-21 09:09:41,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:41,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161244061] [2022-11-21 09:09:41,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161244061] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:41,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:09:41,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-21 09:09:41,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707836578] [2022-11-21 09:09:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:41,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:09:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:09:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:09:41,464 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-21 09:09:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:41,623 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-11-21 09:09:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 09:09:41,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2022-11-21 09:09:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:41,631 INFO L225 Difference]: With dead ends: 49 [2022-11-21 09:09:41,631 INFO L226 Difference]: Without dead ends: 47 [2022-11-21 09:09:41,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-21 09:09:41,636 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 22 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:41,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:09:41,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-21 09:09:41,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-11-21 09:09:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-21 09:09:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-11-21 09:09:41,653 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2022-11-21 09:09:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:41,654 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-11-21 09:09:41,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-21 09:09:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-11-21 09:09:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 09:09:41,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:41,656 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:41,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:41,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 09:09:41,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:41,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2022-11-21 09:09:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:41,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309863502] [2022-11-21 09:09:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:41,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:41,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:41,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376712020] [2022-11-21 09:09:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:41,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:41,912 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:41,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 09:09:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:41,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 09:09:42,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 09:09:42,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 09:09:42,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:42,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309863502] [2022-11-21 09:09:42,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:42,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376712020] [2022-11-21 09:09:42,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376712020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:42,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:09:42,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-21 09:09:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778700291] [2022-11-21 09:09:42,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:42,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 09:09:42,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 09:09:42,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:09:42,207 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 09:09:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:42,583 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2022-11-21 09:09:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:09:42,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-11-21 09:09:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:42,591 INFO L225 Difference]: With dead ends: 99 [2022-11-21 09:09:42,594 INFO L226 Difference]: Without dead ends: 92 [2022-11-21 09:09:42,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:09:42,601 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:42,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 209 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:09:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-21 09:09:42,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2022-11-21 09:09:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-21 09:09:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2022-11-21 09:09:42,623 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2022-11-21 09:09:42,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:42,623 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2022-11-21 09:09:42,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 09:09:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2022-11-21 09:09:42,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-21 09:09:42,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:42,625 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:42,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:42,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:42,831 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2022-11-21 09:09:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:42,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30527477] [2022-11-21 09:09:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:42,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:42,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:42,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752817305] [2022-11-21 09:09:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:42,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:42,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:42,857 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:42,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 09:09:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:42,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 09:09:42,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 09:09:43,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:43,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30527477] [2022-11-21 09:09:43,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:43,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752817305] [2022-11-21 09:09:43,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752817305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:43,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:09:43,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-11-21 09:09:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213792511] [2022-11-21 09:09:43,789 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:43,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 09:09:43,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:43,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 09:09:43,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-21 09:09:43,790 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-21 09:09:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:44,305 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2022-11-21 09:09:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:09:44,306 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2022-11-21 09:09:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:44,307 INFO L225 Difference]: With dead ends: 82 [2022-11-21 09:09:44,308 INFO L226 Difference]: Without dead ends: 80 [2022-11-21 09:09:44,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-21 09:09:44,310 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:44,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 135 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:09:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-21 09:09:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2022-11-21 09:09:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-21 09:09:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2022-11-21 09:09:44,343 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2022-11-21 09:09:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:44,345 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2022-11-21 09:09:44,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-21 09:09:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2022-11-21 09:09:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-21 09:09:44,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:44,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:44,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:44,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:44,564 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2022-11-21 09:09:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:44,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543096831] [2022-11-21 09:09:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:44,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:44,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:44,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770381030] [2022-11-21 09:09:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:44,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:44,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:44,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:44,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 09:09:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:44,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 09:09:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 09:09:44,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 09:09:45,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:45,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543096831] [2022-11-21 09:09:45,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:45,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770381030] [2022-11-21 09:09:45,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770381030] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:45,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:09:45,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2022-11-21 09:09:45,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023561428] [2022-11-21 09:09:45,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:45,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 09:09:45,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:45,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 09:09:45,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:09:45,144 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 09:09:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:45,932 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2022-11-21 09:09:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:09:45,934 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 38 [2022-11-21 09:09:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:45,935 INFO L225 Difference]: With dead ends: 107 [2022-11-21 09:09:45,936 INFO L226 Difference]: Without dead ends: 105 [2022-11-21 09:09:45,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:09:45,937 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 51 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:45,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 335 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 09:09:45,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-21 09:09:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2022-11-21 09:09:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-21 09:09:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2022-11-21 09:09:45,968 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 38 [2022-11-21 09:09:45,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:45,968 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2022-11-21 09:09:45,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 09:09:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2022-11-21 09:09:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 09:09:45,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:45,970 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:45,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:46,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 09:09:46,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:46,184 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2022-11-21 09:09:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:46,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164261296] [2022-11-21 09:09:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:46,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:46,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:46,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338206865] [2022-11-21 09:09:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:46,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:46,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:46,203 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:46,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 09:09:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:46,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 09:09:46,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 09:09:46,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:51,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164261296] [2022-11-21 09:09:51,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:51,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338206865] [2022-11-21 09:09:51,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338206865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:51,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:09:51,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-11-21 09:09:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409448932] [2022-11-21 09:09:51,856 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:51,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:09:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:09:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=171, Unknown=1, NotChecked=0, Total=210 [2022-11-21 09:09:51,857 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 09:09:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:52,175 INFO L93 Difference]: Finished difference Result 114 states and 154 transitions. [2022-11-21 09:09:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 09:09:52,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2022-11-21 09:09:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:52,177 INFO L225 Difference]: With dead ends: 114 [2022-11-21 09:09:52,177 INFO L226 Difference]: Without dead ends: 112 [2022-11-21 09:09:52,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=55, Invalid=250, Unknown=1, NotChecked=0, Total=306 [2022-11-21 09:09:52,178 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:52,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 128 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:09:52,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-21 09:09:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2022-11-21 09:09:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 76 states have internal predecessors, (94), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-21 09:09:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 151 transitions. [2022-11-21 09:09:52,202 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 151 transitions. Word has length 43 [2022-11-21 09:09:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:52,203 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 151 transitions. [2022-11-21 09:09:52,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 09:09:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 151 transitions. [2022-11-21 09:09:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 09:09:52,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:52,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:52,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 09:09:52,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:52,410 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:52,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:52,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2022-11-21 09:09:52,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:52,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306549647] [2022-11-21 09:09:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:52,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:52,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751849620] [2022-11-21 09:09:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:52,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:52,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:52,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:52,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 09:09:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:52,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-21 09:09:52,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 09:09:52,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 09:09:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306549647] [2022-11-21 09:09:52,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751849620] [2022-11-21 09:09:52,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751849620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:52,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:09:52,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2022-11-21 09:09:52,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601151983] [2022-11-21 09:09:52,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:52,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 09:09:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 09:09:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-21 09:09:52,930 INFO L87 Difference]: Start difference. First operand 111 states and 151 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-21 09:09:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:54,858 INFO L93 Difference]: Finished difference Result 259 states and 375 transitions. [2022-11-21 09:09:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 09:09:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2022-11-21 09:09:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:54,862 INFO L225 Difference]: With dead ends: 259 [2022-11-21 09:09:54,862 INFO L226 Difference]: Without dead ends: 257 [2022-11-21 09:09:54,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-11-21 09:09:54,864 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 119 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:54,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 229 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 09:09:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-21 09:09:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 171. [2022-11-21 09:09:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 110 states have (on average 1.2636363636363637) internal successors, (139), 116 states have internal predecessors, (139), 53 states have call successors, (53), 7 states have call predecessors, (53), 7 states have return successors, (52), 47 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-21 09:09:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 244 transitions. [2022-11-21 09:09:54,946 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 244 transitions. Word has length 43 [2022-11-21 09:09:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:54,947 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 244 transitions. [2022-11-21 09:09:54,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-21 09:09:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 244 transitions. [2022-11-21 09:09:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-21 09:09:54,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:54,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:54,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:55,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:55,154 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2022-11-21 09:09:55,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:55,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140326187] [2022-11-21 09:09:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:55,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:55,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:55,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53912425] [2022-11-21 09:09:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:55,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:55,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:55,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:55,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 09:09:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:55,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 09:09:55,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-21 09:09:55,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-21 09:09:56,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:56,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140326187] [2022-11-21 09:09:56,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:56,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53912425] [2022-11-21 09:09:56,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53912425] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 09:09:56,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 09:09:56,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-11-21 09:09:56,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025436755] [2022-11-21 09:09:56,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:56,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:09:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:09:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 09:09:56,573 INFO L87 Difference]: Start difference. First operand 171 states and 244 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 09:09:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:56,693 INFO L93 Difference]: Finished difference Result 178 states and 250 transitions. [2022-11-21 09:09:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:09:56,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2022-11-21 09:09:56,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:56,699 INFO L225 Difference]: With dead ends: 178 [2022-11-21 09:09:56,699 INFO L226 Difference]: Without dead ends: 176 [2022-11-21 09:09:56,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:09:56,702 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:56,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:09:56,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-21 09:09:56,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2022-11-21 09:09:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 113 states have (on average 1.2566371681415929) internal successors, (142), 119 states have internal predecessors, (142), 53 states have call successors, (53), 8 states have call predecessors, (53), 8 states have return successors, (52), 47 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-21 09:09:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 247 transitions. [2022-11-21 09:09:56,787 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 247 transitions. Word has length 48 [2022-11-21 09:09:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:56,790 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 247 transitions. [2022-11-21 09:09:56,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 09:09:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 247 transitions. [2022-11-21 09:09:56,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-21 09:09:56,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:56,794 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:09:56,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:56,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:56,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:09:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2022-11-21 09:09:57,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:09:57,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488138769] [2022-11-21 09:09:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:57,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:09:57,020 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:09:57,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502182402] [2022-11-21 09:09:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:57,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:09:57,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:09:57,036 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:09:57,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 09:09:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:57,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-21 09:09:57,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-21 09:09:58,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-21 09:09:58,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:09:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488138769] [2022-11-21 09:09:58,862 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:09:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502182402] [2022-11-21 09:09:58,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502182402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:58,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:09:58,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2022-11-21 09:09:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780748309] [2022-11-21 09:09:58,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:58,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 09:09:58,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:09:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 09:09:58,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2022-11-21 09:09:58,864 INFO L87 Difference]: Start difference. First operand 175 states and 247 transitions. Second operand has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-21 09:10:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:05,115 INFO L93 Difference]: Finished difference Result 347 states and 493 transitions. [2022-11-21 09:10:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 09:10:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 60 [2022-11-21 09:10:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:05,118 INFO L225 Difference]: With dead ends: 347 [2022-11-21 09:10:05,118 INFO L226 Difference]: Without dead ends: 246 [2022-11-21 09:10:05,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=501, Invalid=2049, Unknown=0, NotChecked=0, Total=2550 [2022-11-21 09:10:05,121 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 172 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:05,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 201 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 09:10:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-21 09:10:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 212. [2022-11-21 09:10:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 139 states have (on average 1.2446043165467626) internal successors, (173), 144 states have internal predecessors, (173), 63 states have call successors, (63), 9 states have call predecessors, (63), 9 states have return successors, (62), 58 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-21 09:10:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 298 transitions. [2022-11-21 09:10:05,215 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 298 transitions. Word has length 60 [2022-11-21 09:10:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:05,216 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 298 transitions. [2022-11-21 09:10:05,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-21 09:10:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 298 transitions. [2022-11-21 09:10:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-21 09:10:05,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:05,217 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:05,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:05,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:05,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1295359331, now seen corresponding path program 2 times [2022-11-21 09:10:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:05,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649115115] [2022-11-21 09:10:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:05,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:10:05,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350832492] [2022-11-21 09:10:05,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:10:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:10:05,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:10:05,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 09:10:05,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:10:05,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:10:05,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 09:10:05,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:10:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-21 09:10:05,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:10:05,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:05,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649115115] [2022-11-21 09:10:05,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:10:05,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350832492] [2022-11-21 09:10:05,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350832492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:10:05,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:10:05,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:10:05,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811617237] [2022-11-21 09:10:05,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:10:05,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:10:05,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:10:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:10:05,591 INFO L87 Difference]: Start difference. First operand 212 states and 298 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 09:10:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:05,778 INFO L93 Difference]: Finished difference Result 258 states and 358 transitions. [2022-11-21 09:10:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:10:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-21 09:10:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:05,783 INFO L225 Difference]: With dead ends: 258 [2022-11-21 09:10:05,783 INFO L226 Difference]: Without dead ends: 173 [2022-11-21 09:10:05,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:10:05,787 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 19 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:05,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 137 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 09:10:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-21 09:10:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 141. [2022-11-21 09:10:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 93 states have internal predecessors, (106), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-21 09:10:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 187 transitions. [2022-11-21 09:10:05,867 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 187 transitions. Word has length 70 [2022-11-21 09:10:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:05,869 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 187 transitions. [2022-11-21 09:10:05,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-21 09:10:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 187 transitions. [2022-11-21 09:10:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 09:10:05,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:05,870 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:05,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:06,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 09:10:06,076 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:06,076 INFO L85 PathProgramCache]: Analyzing trace with hash 798002477, now seen corresponding path program 1 times [2022-11-21 09:10:06,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:06,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670345850] [2022-11-21 09:10:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:06,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:06,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:10:06,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544722641] [2022-11-21 09:10:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:06,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:06,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:10:06,090 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:10:06,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 09:10:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:06,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 09:10:06,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:10:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-21 09:10:06,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:10:06,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:06,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670345850] [2022-11-21 09:10:06,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:10:06,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544722641] [2022-11-21 09:10:06,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544722641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:10:06,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:10:06,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:10:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451790390] [2022-11-21 09:10:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:10:06,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:10:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:10:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:10:06,226 INFO L87 Difference]: Start difference. First operand 141 states and 187 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 09:10:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:06,370 INFO L93 Difference]: Finished difference Result 264 states and 363 transitions. [2022-11-21 09:10:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:10:06,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 73 [2022-11-21 09:10:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:06,372 INFO L225 Difference]: With dead ends: 264 [2022-11-21 09:10:06,372 INFO L226 Difference]: Without dead ends: 173 [2022-11-21 09:10:06,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:10:06,373 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:06,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 09:10:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-21 09:10:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2022-11-21 09:10:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 105 states have internal predecessors, (122), 55 states have call successors, (55), 9 states have call predecessors, (55), 9 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-21 09:10:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 231 transitions. [2022-11-21 09:10:06,468 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 231 transitions. Word has length 73 [2022-11-21 09:10:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:06,469 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 231 transitions. [2022-11-21 09:10:06,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 09:10:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 231 transitions. [2022-11-21 09:10:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-21 09:10:06,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:06,470 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:06,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:06,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 09:10:06,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1622368081, now seen corresponding path program 2 times [2022-11-21 09:10:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:06,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526487206] [2022-11-21 09:10:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:06,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:10:06,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336184985] [2022-11-21 09:10:06,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:10:06,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:06,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:10:06,689 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:10:06,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 09:10:06,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:10:06,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:10:06,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:10:06,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:10:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 09:10:06,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:10:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 09:10:07,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:07,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526487206] [2022-11-21 09:10:07,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:10:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336184985] [2022-11-21 09:10:07,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336184985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:10:07,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:10:07,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-21 09:10:07,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689575272] [2022-11-21 09:10:07,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:10:07,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:10:07,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:07,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:10:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:10:07,058 INFO L87 Difference]: Start difference. First operand 168 states and 231 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-21 09:10:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:10:07,562 INFO L93 Difference]: Finished difference Result 221 states and 303 transitions. [2022-11-21 09:10:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:10:07,562 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 73 [2022-11-21 09:10:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:10:07,564 INFO L225 Difference]: With dead ends: 221 [2022-11-21 09:10:07,564 INFO L226 Difference]: Without dead ends: 165 [2022-11-21 09:10:07,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-21 09:10:07,566 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 75 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:10:07,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 266 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 09:10:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-21 09:10:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 162. [2022-11-21 09:10:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 97 states have (on average 1.175257731958763) internal successors, (114), 99 states have internal predecessors, (114), 55 states have call successors, (55), 9 states have call predecessors, (55), 9 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-21 09:10:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 223 transitions. [2022-11-21 09:10:07,653 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 223 transitions. Word has length 73 [2022-11-21 09:10:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:10:07,653 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 223 transitions. [2022-11-21 09:10:07,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-21 09:10:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 223 transitions. [2022-11-21 09:10:07,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-21 09:10:07,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:10:07,655 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:10:07,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 09:10:07,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:07,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:10:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:10:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash 160585404, now seen corresponding path program 1 times [2022-11-21 09:10:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:10:07,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186847330] [2022-11-21 09:10:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:07,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:10:07,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:10:07,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792661186] [2022-11-21 09:10:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:10:07,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:10:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:10:07,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:10:07,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 09:10:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:10:07,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-21 09:10:07,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:10:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 29 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-21 09:10:09,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:10:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-21 09:10:17,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:10:17,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186847330] [2022-11-21 09:10:17,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:10:17,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792661186] [2022-11-21 09:10:17,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792661186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:10:17,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:10:17,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16] total 33 [2022-11-21 09:10:17,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769785510] [2022-11-21 09:10:17,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:10:17,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 09:10:17,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:10:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 09:10:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 09:10:17,752 INFO L87 Difference]: Start difference. First operand 162 states and 223 transitions. Second operand has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-21 09:10:43,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-21 09:10:57,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-21 09:11:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:07,311 INFO L93 Difference]: Finished difference Result 331 states and 478 transitions. [2022-11-21 09:11:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-21 09:11:07,312 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 87 [2022-11-21 09:11:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:07,314 INFO L225 Difference]: With dead ends: 331 [2022-11-21 09:11:07,314 INFO L226 Difference]: Without dead ends: 327 [2022-11-21 09:11:07,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=1351, Invalid=6131, Unknown=0, NotChecked=0, Total=7482 [2022-11-21 09:11:07,317 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 416 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 679 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:07,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 363 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 2226 Invalid, 2 Unknown, 0 Unchecked, 19.8s Time] [2022-11-21 09:11:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-21 09:11:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 308. [2022-11-21 09:11:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 181 states have (on average 1.2044198895027625) internal successors, (218), 182 states have internal predecessors, (218), 113 states have call successors, (113), 13 states have call predecessors, (113), 13 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-21 09:11:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 443 transitions. [2022-11-21 09:11:07,692 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 443 transitions. Word has length 87 [2022-11-21 09:11:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:07,692 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 443 transitions. [2022-11-21 09:11:07,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-21 09:11:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 443 transitions. [2022-11-21 09:11:07,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-21 09:11:07,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:11:07,694 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:11:07,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:07,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:11:07,902 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:11:07,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:11:07,902 INFO L85 PathProgramCache]: Analyzing trace with hash -275231594, now seen corresponding path program 1 times [2022-11-21 09:11:07,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:11:07,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420611290] [2022-11-21 09:11:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:07,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:11:07,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:11:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608535921] [2022-11-21 09:11:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:07,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:11:07,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:11:07,919 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:11:07,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 09:11:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:08,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 09:11:08,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:11:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-21 09:11:08,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:11:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 09:11:08,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:11:08,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420611290] [2022-11-21 09:11:08,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:11:08,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608535921] [2022-11-21 09:11:08,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608535921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:11:08,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:11:08,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-11-21 09:11:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378463833] [2022-11-21 09:11:08,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:11:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 09:11:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:11:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 09:11:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-21 09:11:08,536 INFO L87 Difference]: Start difference. First operand 308 states and 443 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-21 09:11:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:09,752 INFO L93 Difference]: Finished difference Result 411 states and 587 transitions. [2022-11-21 09:11:09,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 09:11:09,753 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 90 [2022-11-21 09:11:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:09,756 INFO L225 Difference]: With dead ends: 411 [2022-11-21 09:11:09,756 INFO L226 Difference]: Without dead ends: 287 [2022-11-21 09:11:09,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-11-21 09:11:09,760 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 91 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:09,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 294 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 09:11:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-21 09:11:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-21 09:11:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 168 states have (on average 1.1904761904761905) internal successors, (200), 169 states have internal predecessors, (200), 105 states have call successors, (105), 13 states have call predecessors, (105), 13 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-21 09:11:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 409 transitions. [2022-11-21 09:11:10,107 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 409 transitions. Word has length 90 [2022-11-21 09:11:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:10,107 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 409 transitions. [2022-11-21 09:11:10,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-21 09:11:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 409 transitions. [2022-11-21 09:11:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-21 09:11:10,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:11:10,109 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:11:10,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:10,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 09:11:10,316 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:11:10,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:11:10,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1599365144, now seen corresponding path program 1 times [2022-11-21 09:11:10,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:11:10,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25254145] [2022-11-21 09:11:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:10,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:11:10,335 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:11:10,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678194718] [2022-11-21 09:11:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:10,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:11:10,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:11:10,339 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:11:10,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 09:11:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:11:10,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 09:11:10,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:11:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-21 09:11:10,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:11:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-21 09:11:11,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:11:11,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25254145] [2022-11-21 09:11:11,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:11:11,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678194718] [2022-11-21 09:11:11,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678194718] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:11:11,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:11:11,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-21 09:11:11,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781460363] [2022-11-21 09:11:11,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:11:11,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 09:11:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:11:11,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 09:11:11,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-21 09:11:11,047 INFO L87 Difference]: Start difference. First operand 287 states and 409 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-21 09:11:12,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:12,588 INFO L93 Difference]: Finished difference Result 352 states and 497 transitions. [2022-11-21 09:11:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 09:11:12,589 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) Word has length 90 [2022-11-21 09:11:12,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:12,591 INFO L225 Difference]: With dead ends: 352 [2022-11-21 09:11:12,591 INFO L226 Difference]: Without dead ends: 211 [2022-11-21 09:11:12,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 09:11:12,593 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 99 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:12,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 278 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 09:11:12,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-21 09:11:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-21 09:11:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 125 states have (on average 1.192) internal successors, (149), 126 states have internal predecessors, (149), 77 states have call successors, (77), 8 states have call predecessors, (77), 8 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-21 09:11:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2022-11-21 09:11:12,787 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 90 [2022-11-21 09:11:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:12,787 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2022-11-21 09:11:12,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 7 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-21 09:11:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2022-11-21 09:11:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-21 09:11:12,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:11:12,794 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:11:12,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:13,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 09:11:13,000 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:11:13,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:11:13,000 INFO L85 PathProgramCache]: Analyzing trace with hash 965525295, now seen corresponding path program 2 times [2022-11-21 09:11:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:11:13,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049377493] [2022-11-21 09:11:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:13,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:11:13,010 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:11:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498969869] [2022-11-21 09:11:13,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 09:11:13,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:11:13,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:11:13,012 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:11:13,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 09:11:13,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 09:11:13,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:11:13,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 09:11:13,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:11:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 137 proven. 30 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-21 09:11:13,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:11:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-21 09:11:13,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:11:13,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049377493] [2022-11-21 09:11:13,667 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:11:13,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498969869] [2022-11-21 09:11:13,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498969869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:11:13,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:11:13,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-21 09:11:13,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823168863] [2022-11-21 09:11:13,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:11:13,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 09:11:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:11:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 09:11:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2022-11-21 09:11:13,670 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2022-11-21 09:11:14,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:14,592 INFO L93 Difference]: Finished difference Result 331 states and 464 transitions. [2022-11-21 09:11:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:11:14,592 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) Word has length 117 [2022-11-21 09:11:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:14,594 INFO L225 Difference]: With dead ends: 331 [2022-11-21 09:11:14,594 INFO L226 Difference]: Without dead ends: 192 [2022-11-21 09:11:14,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 09:11:14,596 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 119 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:14,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 275 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 09:11:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-21 09:11:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 148. [2022-11-21 09:11:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 94 states have (on average 1.0957446808510638) internal successors, (103), 95 states have internal predecessors, (103), 45 states have call successors, (45), 8 states have call predecessors, (45), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-21 09:11:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 192 transitions. [2022-11-21 09:11:14,755 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 192 transitions. Word has length 117 [2022-11-21 09:11:14,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:14,756 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 192 transitions. [2022-11-21 09:11:14,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 10 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2022-11-21 09:11:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 192 transitions. [2022-11-21 09:11:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-21 09:11:14,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:11:14,759 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:11:14,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:14,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 09:11:14,965 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:11:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:11:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1454845263, now seen corresponding path program 3 times [2022-11-21 09:11:14,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:11:14,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17134224] [2022-11-21 09:11:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:11:14,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:11:14,973 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 09:11:14,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360359512] [2022-11-21 09:11:14,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 09:11:14,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 09:11:14,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:11:14,975 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 09:11:15,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 09:11:15,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 09:11:15,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 09:11:15,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 09:11:15,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:11:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 115 proven. 6 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-21 09:11:15,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:11:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-21 09:11:15,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:11:15,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17134224] [2022-11-21 09:11:15,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 09:11:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360359512] [2022-11-21 09:11:15,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360359512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:11:15,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:11:15,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2022-11-21 09:11:15,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582694874] [2022-11-21 09:11:15,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:11:15,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:11:15,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:11:15,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:11:15,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:11:15,596 INFO L87 Difference]: Start difference. First operand 148 states and 192 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-21 09:11:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:11:16,074 INFO L93 Difference]: Finished difference Result 162 states and 204 transitions. [2022-11-21 09:11:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 09:11:16,075 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 117 [2022-11-21 09:11:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:11:16,075 INFO L225 Difference]: With dead ends: 162 [2022-11-21 09:11:16,075 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 09:11:16,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-11-21 09:11:16,077 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 41 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:11:16,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 155 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 09:11:16,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 09:11:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 09:11:16,078 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) [2022-11-21 09:11:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 09:11:16,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 117 [2022-11-21 09:11:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:11:16,079 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 09:11:16,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 14 states have internal predecessors, (50), 7 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-21 09:11:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 09:11:16,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 09:11:16,082 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 09:11:16,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-21 09:11:16,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 09:11:16,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 09:11:32,997 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 157 DAG size of output: 67 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-21 09:11:34,825 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse10 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse0 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse7 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse6 (= .cse10 |ULTIMATE.start_main_~a~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 1) (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 (= |ULTIMATE.start_main_~s~0#1| 0) .cse4 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) .cse5 .cse6) (and (= (+ .cse7 .cse8) |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) .cse2 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse6 .cse9 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse0 (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) .cse3 .cse5 (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (not (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~v~0#1|))) (< |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~y~0#1|)) .cse6 .cse9 (= (+ |ULTIMATE.start_main_~s~0#1| 1) 0)) (let ((.cse11 (+ |ULTIMATE.start_main_~b~0#1| 1))) (and (= .cse10 (+ |ULTIMATE.start_main_~a~0#1| .cse7 .cse8)) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse1 (<= .cse11 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) (< (* 2 |ULTIMATE.start_main_~c~0#1|) .cse11) .cse4 (< (* 2 |ULTIMATE.start_main_~b~0#1|) (+ |ULTIMATE.start_main_~c~0#1| 1)) .cse6 .cse9))))) [2022-11-21 09:11:34,826 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse5 (= (+ .cse1 .cse2) |ULTIMATE.start_main_~b~0#1|)) (.cse0 (+ .cse3 .cse4))) (and (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| .cse1 .cse2)) (or (= (+ .cse3 |ULTIMATE.start_main_~b~0#1| .cse4) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 .cse2) (* 2 .cse1))) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| 0) (not .cse5)) (let ((.cse9 (= .cse0 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse6 (or (= |ULTIMATE.start_main_~b~0#1| 0) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse9)) (.cse7 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse8 (<= 1 |ULTIMATE.start_main_~x~0#1|))) (or (and .cse6 .cse7 .cse8 .cse9) (and .cse6 .cse7 .cse5 .cse8)))) (<= |ULTIMATE.start_main_~x~0#1| 2)))) [2022-11-21 09:11:34,826 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse2 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse1 (= |ULTIMATE.start_main_~s~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) (<= (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~v~0#1|) 2)) 2) |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) (not (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse2) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-11-21 09:11:34,826 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2022-11-21 09:11:34,826 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 09:11:34,826 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 09:11:34,826 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 09:11:34,826 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-21 09:11:34,827 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-21 09:11:34,827 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2022-11-21 09:11:34,827 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse2 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse1 (= |ULTIMATE.start_main_~s~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) (<= (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~v~0#1|) 2)) 2) |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) (not (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse2) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-11-21 09:11:34,827 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2022-11-21 09:11:34,827 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2022-11-21 09:11:34,827 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 09:11:34,827 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-21 09:11:34,827 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse2 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse1 (= |ULTIMATE.start_main_~s~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) (<= (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~v~0#1|) 2)) 2) |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) (not (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse2) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-11-21 09:11:34,828 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse2 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse1 (= |ULTIMATE.start_main_~s~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) (<= (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~v~0#1|) 2)) 2) |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) (not (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse2) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-11-21 09:11:34,828 INFO L902 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2022-11-21 09:11:34,828 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse19 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse20 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse16 (+ .cse19 .cse20)) (.cse17 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse18 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse3 (or (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse17 .cse18) (+ .cse19 |ULTIMATE.start_main_~b~0#1| .cse20)) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse2 (= (+ .cse17 .cse18) |ULTIMATE.start_main_~b~0#1|)) (.cse4 (<= 0 |ULTIMATE.start_main_~c~0#1|)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse8 (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse12 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse14 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse9 (= .cse16 |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 2) .cse0 (<= .cse1 |ULTIMATE.start_main_~a~0#1|) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse2 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse10 .cse11 (= |ULTIMATE.start_main_~k~0#1| 0) .cse6 .cse12 .cse9 .cse13 .cse14) (let ((.cse15 (* 2 |ULTIMATE.start_main_~b~0#1|))) (and (<= |ULTIMATE.start_main_~v~0#1| .cse15) .cse0 .cse2 .cse3 (<= (+ .cse15 |ULTIMATE.start_main_~c~0#1|) 2) .cse4 .cse10 .cse11 (<= (+ |ULTIMATE.start_main_~c~0#1| 1) .cse15) .cse6 .cse12 .cse9 .cse13 .cse14)) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse2 .cse4 .cse10 .cse11 .cse8 .cse12 .cse9 .cse13 .cse14 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (and (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~s~0#1| Int)) (= .cse16 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~c~0#1|))) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (<= .cse1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse5 .cse6 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse7 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9))))) [2022-11-21 09:11:34,829 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2022-11-21 09:11:34,829 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-21 09:11:34,829 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-11-21 09:11:34,829 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-21 09:11:34,830 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|)) (.cse1 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse2 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse1 (= |ULTIMATE.start_main_~s~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) (<= (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~v~0#1|) 2)) 2) |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) (not (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse2) (and (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-11-21 09:11:34,830 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2022-11-21 09:11:34,830 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-21 09:11:34,830 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-21 09:11:34,830 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-11-21 09:11:34,831 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-21 09:11:34,831 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-21 09:11:34,831 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-21 09:11:34,831 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-21 09:11:34,831 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-21 09:11:34,831 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-21 09:11:34,832 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-21 09:11:34,835 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 09:11:34,837 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 09:11:34,846 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-21 09:11:34,847 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-21 09:11:34,854 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-21 09:11:34,854 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-21 09:11:34,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:11:34 BoogieIcfgContainer [2022-11-21 09:11:34,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 09:11:34,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 09:11:34,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 09:11:34,864 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 09:11:34,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:09:38" (3/4) ... [2022-11-21 09:11:34,868 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 09:11:34,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-21 09:11:34,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-21 09:11:34,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-21 09:11:34,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 09:11:34,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 09:11:34,881 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 09:11:34,922 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 09:11:34,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 09:11:34,923 INFO L158 Benchmark]: Toolchain (without parser) took 117014.93ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 133.0MB in the beginning and 70.1MB in the end (delta: 62.8MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. [2022-11-21 09:11:34,923 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:11:34,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.03ms. Allocated memory is still 165.7MB. Free memory was 132.3MB in the beginning and 133.8MB in the end (delta: -1.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-21 09:11:34,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.21ms. Allocated memory is still 165.7MB. Free memory was 133.8MB in the beginning and 131.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:11:34,924 INFO L158 Benchmark]: Boogie Preprocessor took 44.07ms. Allocated memory is still 165.7MB. Free memory was 131.8MB in the beginning and 130.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:11:34,925 INFO L158 Benchmark]: RCFGBuilder took 464.86ms. Allocated memory is still 165.7MB. Free memory was 130.5MB in the beginning and 119.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 09:11:34,925 INFO L158 Benchmark]: TraceAbstraction took 116054.66ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 117.9MB in the beginning and 73.2MB in the end (delta: 44.7MB). Peak memory consumption was 104.3MB. Max. memory is 16.1GB. [2022-11-21 09:11:34,925 INFO L158 Benchmark]: Witness Printer took 58.66ms. Allocated memory is still 199.2MB. Free memory was 73.2MB in the beginning and 70.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:11:34,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.03ms. Allocated memory is still 165.7MB. Free memory was 132.3MB in the beginning and 133.8MB in the end (delta: -1.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.21ms. Allocated memory is still 165.7MB. Free memory was 133.8MB in the beginning and 131.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.07ms. Allocated memory is still 165.7MB. Free memory was 131.8MB in the beginning and 130.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.86ms. Allocated memory is still 165.7MB. Free memory was 130.5MB in the beginning and 119.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 116054.66ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 117.9MB in the beginning and 73.2MB in the end (delta: 44.7MB). Peak memory consumption was 104.3MB. Max. memory is 16.1GB. * Witness Printer took 58.66ms. Allocated memory is still 199.2MB. Free memory was 73.2MB in the beginning and 70.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] * 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: 13]: 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 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 115.9s, OverallIterations: 18, TraceHistogramMax: 15, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 65.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 18.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 1499 SdHoareTripleChecker+Valid, 29.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1442 mSDsluCounter, 3528 SdHoareTripleChecker+Invalid, 28.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2801 mSDsCounter, 1513 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6731 IncrementalHoareTripleChecker+Invalid, 8246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1513 mSolverCounterUnsat, 727 mSDtfsCounter, 6731 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2099 GetRequests, 1685 SyntacticMatches, 16 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3633 ImplicationChecksByTransitivity, 46.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=14, InterpolantAutomatonStates: 273, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 18 MinimizatonAttempts, 274 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 308 PreInvPairs, 360 NumberOfFragments, 1225 HoareAnnotationTreeSize, 308 FomulaSimplifications, 9474 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 15 FomulaSimplificationsInter, 21350 FormulaSimplificationTreeSizeReductionInter, 17.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 1143 NumberOfCodeBlocks, 1096 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1915 ConstructedInterpolants, 16 QuantifiedInterpolants, 8696 SizeOfPredicates, 123 NumberOfNonLiveVariables, 2891 ConjunctsInSsa, 397 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 3560/3867 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant [2022-11-21 09:11:34,936 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-21 09:11:34,936 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] [2022-11-21 09:11:34,938 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~q~0#1,QUANTIFIED] [2022-11-21 09:11:34,938 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~s~0#1,QUANTIFIED] Derived loop invariant: ((((((((((((((a == y && a <= 2) && b * d == v) && b + 1 <= a) && s * y + q * x == b) && (k * q * x + k * s * y + s * y + q * x == r * y + b + p * x || !(c == 0))) && 0 <= c) && s == 0) && 1 <= x) && r == 1) && c < b) && r * y + p * x == a) || (((((((((((1 <= y && a == c) && s * y + q * x == b) && b <= 2) && r == 0) && q == 0) && k == 0) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || (((((((((((((v <= 2 * b && b * d == v) && s * y + q * x == b) && (k * q * x + k * s * y + s * y + q * x == r * y + b + p * x || !(c == 0))) && 2 * b + c <= 2) && 0 <= c) && r == 0) && q == 0) && c + 1 <= 2 * b) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || (((((((((((k == 1 && b * d == v) && s * y + q * x == b) && 0 <= c) && r == 0) && q == 0) && c < b) && a == x) && r * y + p * x == a) && x <= 2) && s == 1) && b + c == x)) || ((((((((((forall ULTIMATE.start_main_~q~0#1 : int, ULTIMATE.start_main_~s~0#1 : int :: r * y + p * x == k * ULTIMATE.start_main_~q~0#1 * x + k * ULTIMATE.start_main_~s~0#1 * y + c) && b == x) && b + 1 <= c) && q == 1) && s == 0) && 1 <= x) && c <= 2) && r == 1) && c == y) && r * y + p * x == a) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((a == y && b * d == v) && b == x) && q == 1) && k == 0) && s == 0) && 1 <= x) && c <= 2) && 2 * ((-1 + v) / 2) + 2 <= c) && r == 1) && c == y) && !(y <= x)) && r * y + p * x == a) || ((((((((((((c == x && 1 <= y) && b * d == v) && b == y) && b <= a) && v <= c) && r == 0) && q == 0) && k == 0) && a == x) && r * y + p * x == a) && x <= 2) && s == 1) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((a == y && a <= 2) && c <= 1) && x < y) && 1 <= b) && q == 1) && s == 0) && 1 <= x) && b <= c) && r == 1) && r * y + p * x == a) || (((((((((s * y + q * x == b && b <= 2) && 1 <= b) && r == 0) && q == 0) && 1 <= x) && a == x) && r * y + p * x == a) && x <= 2) && s == 1)) || (((((((((b + y == x && a == y) && y <= x) && q == 1) && r == 1) && (2 * v <= c || !(c == v))) && x < 2 * y) && r * y + p * x == a) && x <= 2) && s + 1 == 0)) || ((((((((((r * y + p * x == a + s * y + q * x && y <= 2) && 1 <= y) && a <= 2) && b + 1 <= a) && 0 <= c) && 2 * c < b + 1) && 1 <= x) && 2 * b < c + 1) && r * y + p * x == a) && x <= 2) RESULT: Ultimate proved your program to be correct! [2022-11-21 09:11:34,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_637dc45f-a2ed-4183-8ac3-a28f6f45122a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE