./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-1.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_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/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_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/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_5e370d99-e886-4abf-8d21-e053c3256257/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 e1ce1c36cc17bb5fac8e93fbe54fbc2a77334d62ad40c06c722f9da96af2516f --- 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 13:55:58,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:55:58,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:55:59,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:55:59,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:55:59,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:55:59,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:55:59,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:55:59,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:55:59,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:55:59,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:55:59,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:55:59,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:55:59,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:55:59,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:55:59,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:55:59,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:55:59,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:55:59,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:55:59,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:55:59,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:55:59,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:55:59,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:55:59,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:55:59,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:55:59,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:55:59,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:55:59,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:55:59,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:55:59,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:55:59,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:55:59,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:55:59,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:55:59,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:55:59,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:55:59,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:55:59,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:55:59,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:55:59,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:55:59,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:55:59,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:55:59,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:55:59,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:55:59,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:55:59,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:55:59,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:55:59,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:55:59,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:55:59,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:55:59,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:55:59,160 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:55:59,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:55:59,162 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:55:59,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:55:59,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:55:59,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:55:59,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:55:59,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:55:59,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:55:59,164 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:55:59,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:55:59,165 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:55:59,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:55:59,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:55:59,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:55:59,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:55:59,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:55:59,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:55:59,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:55:59,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:55:59,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:55:59,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:55:59,169 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:55:59,169 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:55:59,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:55:59,170 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_5e370d99-e886-4abf-8d21-e053c3256257/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ce1c36cc17bb5fac8e93fbe54fbc2a77334d62ad40c06c722f9da96af2516f [2022-11-21 13:55:59,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:55:59,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:55:59,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:55:59,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:55:59,611 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:55:59,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/ldv-regression/test22-1.c [2022-11-21 13:56:03,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:56:03,662 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:56:03,663 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/sv-benchmarks/c/ldv-regression/test22-1.c [2022-11-21 13:56:03,671 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/data/d6c30bb99/f23e671b9a674e188e79a5383f1021b5/FLAG9fac4b224 [2022-11-21 13:56:03,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/data/d6c30bb99/f23e671b9a674e188e79a5383f1021b5 [2022-11-21 13:56:03,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:56:03,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:56:03,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:56:03,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:56:03,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:56:03,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:03" (1/1) ... [2022-11-21 13:56:03,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f53f4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:03, skipping insertion in model container [2022-11-21 13:56:03,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:03" (1/1) ... [2022-11-21 13:56:03,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:56:03,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:56:04,011 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_5e370d99-e886-4abf-8d21-e053c3256257/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2022-11-21 13:56:04,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:56:04,030 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:56:04,067 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_5e370d99-e886-4abf-8d21-e053c3256257/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2022-11-21 13:56:04,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:56:04,091 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:56:04,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04 WrapperNode [2022-11-21 13:56:04,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:56:04,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:56:04,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:56:04,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:56:04,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,162 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2022-11-21 13:56:04,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:56:04,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:56:04,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:56:04,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:56:04,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:56:04,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:56:04,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:56:04,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:56:04,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (1/1) ... [2022-11-21 13:56:04,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:56:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:04,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:56:04,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:56:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:56:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:56:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:56:04,333 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2022-11-21 13:56:04,334 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2022-11-21 13:56:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:56:04,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:56:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:56:04,471 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:56:04,474 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:56:04,729 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:56:04,737 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:56:04,737 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:56:04,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:04 BoogieIcfgContainer [2022-11-21 13:56:04,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:56:04,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:56:04,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:56:04,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:56:04,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:56:03" (1/3) ... [2022-11-21 13:56:04,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c3a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:04, skipping insertion in model container [2022-11-21 13:56:04,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:04" (2/3) ... [2022-11-21 13:56:04,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c3a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:04, skipping insertion in model container [2022-11-21 13:56:04,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:04" (3/3) ... [2022-11-21 13:56:04,766 INFO L112 eAbstractionObserver]: Analyzing ICFG test22-1.c [2022-11-21 13:56:04,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:56:04,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:56:04,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:56:04,953 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;@4598f3c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:56:04,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:56:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 13:56:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 13:56:04,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:04,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:04,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:04,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash 824121920, now seen corresponding path program 1 times [2022-11-21 13:56:05,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:05,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102045577] [2022-11-21 13:56:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:56:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:56:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 13:56:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:05,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:05,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102045577] [2022-11-21 13:56:05,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102045577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:05,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:05,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:56:05,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023607515] [2022-11-21 13:56:05,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:05,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:56:05,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:56:05,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:56:05,540 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:05,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:05,569 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-11-21 13:56:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:56:05,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-11-21 13:56:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:05,582 INFO L225 Difference]: With dead ends: 34 [2022-11-21 13:56:05,582 INFO L226 Difference]: Without dead ends: 21 [2022-11-21 13:56:05,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 13:56:05,594 INFO L413 NwaCegarLoop]: 29 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, 29 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 13:56:05,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-21 13:56:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-21 13:56:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 13:56:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-21 13:56:05,656 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 25 [2022-11-21 13:56:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:05,659 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-21 13:56:05,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-21 13:56:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 13:56:05,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:05,664 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:05,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:56:05,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:05,671 INFO L85 PathProgramCache]: Analyzing trace with hash -428032104, now seen corresponding path program 1 times [2022-11-21 13:56:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:05,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335604588] [2022-11-21 13:56:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:05,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:56:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:56:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 13:56:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:05,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:05,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335604588] [2022-11-21 13:56:05,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335604588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:05,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:05,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:05,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725453433] [2022-11-21 13:56:05,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:05,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:05,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:05,959 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:06,002 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-21 13:56:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:06,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-21 13:56:06,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:06,004 INFO L225 Difference]: With dead ends: 29 [2022-11-21 13:56:06,004 INFO L226 Difference]: Without dead ends: 21 [2022-11-21 13:56:06,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:06,007 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:06,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-21 13:56:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-21 13:56:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 13:56:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-21 13:56:06,017 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 26 [2022-11-21 13:56:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:06,018 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-21 13:56:06,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-21 13:56:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 13:56:06,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:06,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:06,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:56:06,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash 381314522, now seen corresponding path program 1 times [2022-11-21 13:56:06,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:06,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037456015] [2022-11-21 13:56:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:06,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:56:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:56:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:06,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 13:56:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:06,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:06,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037456015] [2022-11-21 13:56:06,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037456015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:06,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:06,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:56:06,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681064090] [2022-11-21 13:56:06,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:06,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:56:06,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:56:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:56:06,620 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:06,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:06,739 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-21 13:56:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:56:06,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-21 13:56:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:06,741 INFO L225 Difference]: With dead ends: 28 [2022-11-21 13:56:06,741 INFO L226 Difference]: Without dead ends: 23 [2022-11-21 13:56:06,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:56:06,744 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:06,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 56 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:56:06,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-21 13:56:06,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-21 13:56:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 13:56:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-21 13:56:06,753 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 26 [2022-11-21 13:56:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:06,754 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-21 13:56:06,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:06,754 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-21 13:56:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 13:56:06,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:06,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:06,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:56:06,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:06,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1414133217, now seen corresponding path program 1 times [2022-11-21 13:56:06,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:06,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523218296] [2022-11-21 13:56:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:56:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:56:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 13:56:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:07,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:07,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523218296] [2022-11-21 13:56:07,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523218296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:56:07,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029666916] [2022-11-21 13:56:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:07,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:07,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:07,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:07,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:56:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:07,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 13:56:07,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:07,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-21 13:56:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:07,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:07,908 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 13:56:07,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 13:56:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:07,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029666916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:07,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:56:07,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-11-21 13:56:07,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157748822] [2022-11-21 13:56:07,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:07,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:56:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:07,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:56:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:56:07,971 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:08,388 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-11-21 13:56:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:56:08,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-21 13:56:08,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:08,393 INFO L225 Difference]: With dead ends: 34 [2022-11-21 13:56:08,394 INFO L226 Difference]: Without dead ends: 29 [2022-11-21 13:56:08,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2022-11-21 13:56:08,396 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:08,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 113 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:08,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-21 13:56:08,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-21 13:56:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 13:56:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-21 13:56:08,413 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 28 [2022-11-21 13:56:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:08,414 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-21 13:56:08,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-21 13:56:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-21 13:56:08,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:08,428 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:08,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:08,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:08,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 124667758, now seen corresponding path program 2 times [2022-11-21 13:56:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:08,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066011565] [2022-11-21 13:56:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:08,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:56:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:09,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:56:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 13:56:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:09,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:09,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066011565] [2022-11-21 13:56:09,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066011565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:56:09,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185848356] [2022-11-21 13:56:09,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:56:09,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:09,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:09,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:09,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:56:09,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:56:09,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:56:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 13:56:09,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:09,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-21 13:56:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:09,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:09,856 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 13:56:09,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 13:56:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:09,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185848356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:09,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:56:09,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2022-11-21 13:56:09,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576443276] [2022-11-21 13:56:09,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:09,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 13:56:09,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:09,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 13:56:09,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-21 13:56:09,903 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:10,726 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2022-11-21 13:56:10,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 13:56:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-11-21 13:56:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:10,728 INFO L225 Difference]: With dead ends: 46 [2022-11-21 13:56:10,728 INFO L226 Difference]: Without dead ends: 41 [2022-11-21 13:56:10,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2022-11-21 13:56:10,731 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 67 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:10,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 117 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:56:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-21 13:56:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-21 13:56:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-21 13:56:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-11-21 13:56:10,742 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 34 [2022-11-21 13:56:10,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:10,742 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-11-21 13:56:10,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-11-21 13:56:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-21 13:56:10,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:10,744 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:10,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:10,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:10,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1124387916, now seen corresponding path program 3 times [2022-11-21 13:56:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:10,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767797254] [2022-11-21 13:56:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:10,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 13:56:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 13:56:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 13:56:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 13:56:12,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:12,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767797254] [2022-11-21 13:56:12,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767797254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:56:12,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555131310] [2022-11-21 13:56:12,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:56:12,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:12,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:12,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:12,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:56:12,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 13:56:12,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:56:12,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-21 13:56:12,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:12,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2022-11-21 13:56:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-21 13:56:13,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:56:13,326 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-21 13:56:13,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 31 [2022-11-21 13:56:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-21 13:56:13,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555131310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:56:13,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:56:13,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 34 [2022-11-21 13:56:13,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280910906] [2022-11-21 13:56:13,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:56:13,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-21 13:56:13,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:13,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-21 13:56:13,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 13:56:13,525 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 34 states have internal predecessors, (58), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:15,660 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2022-11-21 13:56:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 13:56:15,660 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 34 states have internal predecessors, (58), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-21 13:56:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:15,661 INFO L225 Difference]: With dead ends: 46 [2022-11-21 13:56:15,661 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 13:56:15,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=436, Invalid=2870, Unknown=0, NotChecked=0, Total=3306 [2022-11-21 13:56:15,664 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 50 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:15,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 175 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:56:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 13:56:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 13:56:15,666 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 13:56:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 13:56:15,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2022-11-21 13:56:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:15,667 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 13:56:15,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 34 states have internal predecessors, (58), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 13:56:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 13:56:15,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 13:56:15,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 13:56:15,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 13:56:15,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 13:56:16,329 INFO L899 garLoopResultBuilder]: For program point get_dummyFINAL(lines 22 25) no Hoare annotation was computed. [2022-11-21 13:56:16,330 INFO L902 garLoopResultBuilder]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2022-11-21 13:56:16,330 INFO L899 garLoopResultBuilder]: For program point get_dummyEXIT(lines 22 25) no Hoare annotation was computed. [2022-11-21 13:56:16,330 INFO L902 garLoopResultBuilder]: At program point L35-2(line 35) the Hoare annotation is: true [2022-11-21 13:56:16,330 INFO L899 garLoopResultBuilder]: For program point L37-4(lines 37 46) no Hoare annotation was computed. [2022-11-21 13:56:16,330 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 13:56:16,331 INFO L899 garLoopResultBuilder]: For program point L35-3(line 35) no Hoare annotation was computed. [2022-11-21 13:56:16,331 INFO L902 garLoopResultBuilder]: At program point L35-4(line 35) the Hoare annotation is: true [2022-11-21 13:56:16,331 INFO L899 garLoopResultBuilder]: For program point L35-5(line 35) no Hoare annotation was computed. [2022-11-21 13:56:16,331 INFO L895 garLoopResultBuilder]: At program point L29(lines 27 30) the Hoare annotation is: (and (= 1 |ULTIMATE.start_check_#res#1|) (= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|)) (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (or (not (= |ULTIMATE.start_main_~pd2~0#1.base| 0)) (not (= |ULTIMATE.start_main_~pd2~0#1.offset| 0))) (= |ULTIMATE.start_main_~pd2~0#1.offset| |ULTIMATE.start_main_~pa~0#1.offset|)) [2022-11-21 13:56:16,331 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 20) no Hoare annotation was computed. [2022-11-21 13:56:16,332 INFO L895 garLoopResultBuilder]: At program point L44(lines 33 52) the Hoare annotation is: false [2022-11-21 13:56:16,332 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2022-11-21 13:56:16,332 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (let ((.cse3 (or (not (= 0 |ULTIMATE.start_main_~pd1~0#1.base|)) (not (= |ULTIMATE.start_main_~pd1~0#1.offset| 0)))) (.cse0 (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|)) (.cse1 (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|)) (.cse2 (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|)) (.cse4 (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|)) (.cse6 (or (not (= |ULTIMATE.start_main_~pa~0#1.base| 0)) (not (= |ULTIMATE.start_main_~pa~0#1.offset| 0)))) (.cse5 (= |ULTIMATE.start_main_~pd2~0#1.offset| |ULTIMATE.start_main_~pa~0#1.offset|))) (or (and .cse0 (= .cse1 (+ |ULTIMATE.start_main_~i~0#1| 1)) .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse2 (= (+ 6 |ULTIMATE.start_main_~i~0#1|) .cse1) .cse4 .cse6 .cse5) (and (= (+ 2 |ULTIMATE.start_main_~i~0#1|) .cse1) .cse0 .cse2 .cse3 .cse4 .cse5) (and (= (+ 9 |ULTIMATE.start_main_~i~0#1|) .cse1) .cse0 .cse2 .cse4 .cse6 .cse5) (and (= (+ |ULTIMATE.start_main_~i~0#1| 4) .cse1) .cse0 .cse2 .cse3 .cse4 .cse5) (let ((.cse7 (+ |ULTIMATE.start_main_~i~0#1| 10))) (and .cse0 .cse2 (<= .cse7 .cse1) (<= .cse1 .cse7) .cse4 .cse6 .cse5)) (and .cse0 .cse2 .cse3 .cse4 (= (+ 3 |ULTIMATE.start_main_~i~0#1|) .cse1) .cse5) (and (= (+ 5 |ULTIMATE.start_main_~i~0#1|) .cse1) .cse0 .cse2 .cse3 .cse4 .cse5) (and (= (+ 7 |ULTIMATE.start_main_~i~0#1|) .cse1) .cse0 .cse2 .cse4 .cse6 .cse5) (and (= |ULTIMATE.start_main_~i~0#1| .cse1) .cse0 .cse2 .cse4 (or (not (= |ULTIMATE.start_main_~pd2~0#1.base| 0)) (not (= |ULTIMATE.start_main_~pd2~0#1.offset| 0))) .cse5) (and .cse0 (= (+ |ULTIMATE.start_main_~i~0#1| 8) .cse1) .cse2 .cse4 .cse6 .cse5))) [2022-11-21 13:56:16,332 INFO L899 garLoopResultBuilder]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2022-11-21 13:56:16,333 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 13:56:16,333 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 13:56:16,333 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 13:56:16,333 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2022-11-21 13:56:16,333 INFO L902 garLoopResultBuilder]: At program point L51(lines 32 52) the Hoare annotation is: true [2022-11-21 13:56:16,333 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2022-11-21 13:56:16,333 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-11-21 13:56:16,334 INFO L902 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: true [2022-11-21 13:56:16,334 INFO L899 garLoopResultBuilder]: For program point L37-2(lines 37 46) no Hoare annotation was computed. [2022-11-21 13:56:16,334 INFO L899 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2022-11-21 13:56:16,338 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-11-21 13:56:16,341 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:56:16,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:56:16 BoogieIcfgContainer [2022-11-21 13:56:16,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:56:16,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:56:16,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:56:16,371 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:56:16,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:04" (3/4) ... [2022-11-21 13:56:16,375 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 13:56:16,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2022-11-21 13:56:16,388 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-21 13:56:16,388 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-21 13:56:16,389 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 13:56:16,389 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 13:56:16,420 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((1 == \result && i == unknown-#memory_int-unknown[pa][pa]) && pd1 == pd2) && pd2 == pd1) && pa == pd2) && (!(pd2 == 0) || !(pd2 == 0))) && pd2 == pa [2022-11-21 13:56:16,444 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 13:56:16,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:56:16,445 INFO L158 Benchmark]: Toolchain (without parser) took 12743.24ms. Allocated memory was 132.1MB in the beginning and 211.8MB in the end (delta: 79.7MB). Free memory was 97.2MB in the beginning and 141.1MB in the end (delta: -43.9MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2022-11-21 13:56:16,445 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 132.1MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:56:16,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.29ms. Allocated memory is still 132.1MB. Free memory was 97.2MB in the beginning and 86.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:56:16,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.38ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 85.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:56:16,447 INFO L158 Benchmark]: Boogie Preprocessor took 62.33ms. Allocated memory is still 132.1MB. Free memory was 85.0MB in the beginning and 83.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:56:16,447 INFO L158 Benchmark]: RCFGBuilder took 529.07ms. Allocated memory is still 132.1MB. Free memory was 83.3MB in the beginning and 71.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-21 13:56:16,448 INFO L158 Benchmark]: TraceAbstraction took 11612.06ms. Allocated memory was 132.1MB in the beginning and 211.8MB in the end (delta: 79.7MB). Free memory was 71.2MB in the beginning and 144.2MB in the end (delta: -73.0MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-11-21 13:56:16,449 INFO L158 Benchmark]: Witness Printer took 73.92ms. Allocated memory is still 211.8MB. Free memory was 144.2MB in the beginning and 141.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:56:16,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 132.1MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.29ms. Allocated memory is still 132.1MB. Free memory was 97.2MB in the beginning and 86.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.38ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 85.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.33ms. Allocated memory is still 132.1MB. Free memory was 85.0MB in the beginning and 83.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 529.07ms. Allocated memory is still 132.1MB. Free memory was 83.3MB in the beginning and 71.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11612.06ms. Allocated memory was 132.1MB in the beginning and 211.8MB in the end (delta: 79.7MB). Free memory was 71.2MB in the beginning and 144.2MB in the end (delta: -73.0MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Witness Printer took 73.92ms. Allocated memory is still 211.8MB. Free memory was 144.2MB in the beginning and 141.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.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: 50]: 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 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 191 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 533 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 412 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 659 IncrementalHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 121 mSDtfsCounter, 659 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 349 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 23 NumberOfFragments, 387 HoareAnnotationTreeSize, 10 FomulaSimplifications, 95 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 293 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 2026 SizeOfPredicates, 33 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 289/504 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: 40]: Loop Invariant Derived loop invariant: ((((((((((((((pd1 == pd2 && unknown-#memory_int-unknown[pa][pa] == i + 1) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0))) && pa == pd2) && pd2 == pa) || (((((pd1 == pd2 && pd2 == pd1) && 6 + i == unknown-#memory_int-unknown[pa][pa]) && pa == pd2) && (!(pa == 0) || !(pa == 0))) && pd2 == pa)) || (((((2 + i == unknown-#memory_int-unknown[pa][pa] && pd1 == pd2) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0))) && pa == pd2) && pd2 == pa)) || (((((9 + i == unknown-#memory_int-unknown[pa][pa] && pd1 == pd2) && pd2 == pd1) && pa == pd2) && (!(pa == 0) || !(pa == 0))) && pd2 == pa)) || (((((i + 4 == unknown-#memory_int-unknown[pa][pa] && pd1 == pd2) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0))) && pa == pd2) && pd2 == pa)) || ((((((pd1 == pd2 && pd2 == pd1) && i + 10 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 10) && pa == pd2) && (!(pa == 0) || !(pa == 0))) && pd2 == pa)) || (((((pd1 == pd2 && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0))) && pa == pd2) && 3 + i == unknown-#memory_int-unknown[pa][pa]) && pd2 == pa)) || (((((5 + i == unknown-#memory_int-unknown[pa][pa] && pd1 == pd2) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0))) && pa == pd2) && pd2 == pa)) || (((((7 + i == unknown-#memory_int-unknown[pa][pa] && pd1 == pd2) && pd2 == pd1) && pa == pd2) && (!(pa == 0) || !(pa == 0))) && pd2 == pa)) || (((((i == unknown-#memory_int-unknown[pa][pa] && pd1 == pd2) && pd2 == pd1) && pa == pd2) && (!(pd2 == 0) || !(pd2 == 0))) && pd2 == pa)) || (((((pd1 == pd2 && i + 8 == unknown-#memory_int-unknown[pa][pa]) && pd2 == pd1) && pa == pd2) && (!(pa == 0) || !(pa == 0))) && pd2 == pa) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((1 == \result && i == unknown-#memory_int-unknown[pa][pa]) && pd1 == pd2) && pd2 == pd1) && pa == pd2) && (!(pd2 == 0) || !(pd2 == 0))) && pd2 == pa RESULT: Ultimate proved your program to be correct! [2022-11-21 13:56:16,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e370d99-e886-4abf-8d21-e053c3256257/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