./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/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_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/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 64bit --witnessprinter.graph.data.programhash 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 --- 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 16:25:26,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:25:26,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:25:26,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:25:26,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:25:26,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:25:26,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:25:26,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:25:26,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:25:26,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:25:26,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:25:26,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:25:26,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:25:26,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:25:26,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:25:26,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:25:26,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:25:26,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:25:26,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:25:26,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:25:26,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:25:26,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:25:26,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:25:26,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:25:26,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:25:26,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:25:26,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:25:26,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:25:26,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:25:26,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:25:26,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:25:26,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:25:26,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:25:26,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:25:26,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:25:26,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:25:26,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:25:26,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:25:26,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:25:26,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:25:26,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:25:26,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 16:25:26,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:25:26,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:25:26,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:25:26,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:25:26,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:25:26,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:25:26,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:25:26,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:25:26,222 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:25:26,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:25:26,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:25:26,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:25:26,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:25:26,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:25:26,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:25:26,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:25:26,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:25:26,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:25:26,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:25:26,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:25:26,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:25:26,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:25:26,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:25:26,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:25:26,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:25:26,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:25:26,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:25:26,228 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:25:26,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:25:26,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:25:26,229 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_a59fd885-393a-4c3f-93b9-133341e9b00e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-11-21 16:25:26,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:25:26,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:25:26,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:25:26,590 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:25:26,591 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:25:26,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-21 16:25:29,660 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:25:29,979 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:25:29,979 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-21 16:25:30,014 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/data/7314c23d7/9288ca7f77ee4864b39eb3bcb1287143/FLAG4bca58611 [2022-11-21 16:25:30,032 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/data/7314c23d7/9288ca7f77ee4864b39eb3bcb1287143 [2022-11-21 16:25:30,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:25:30,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:25:30,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:25:30,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:25:30,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:25:30,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:30,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a24d1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30, skipping insertion in model container [2022-11-21 16:25:30,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:30,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:25:30,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:25:30,372 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_a59fd885-393a-4c3f-93b9-133341e9b00e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-21 16:25:30,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:25:30,684 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:25:30,696 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_a59fd885-393a-4c3f-93b9-133341e9b00e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-21 16:25:30,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:25:30,844 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:25:30,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30 WrapperNode [2022-11-21 16:25:30,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:25:30,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:25:30,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:25:30,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:25:30,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:30,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,054 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1481 [2022-11-21 16:25:31,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:25:31,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:25:31,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:25:31,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:25:31,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,131 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:25:31,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:25:31,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:25:31,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:25:31,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (1/1) ... [2022-11-21 16:25:31,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:25:31,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:25:31,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:25:31,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:25:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:25:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:25:31,735 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:25:31,737 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:27:35,870 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:27:35,881 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:27:35,881 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:27:35,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:27:35 BoogieIcfgContainer [2022-11-21 16:27:35,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:27:35,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:27:35,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:27:35,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:27:35,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:25:30" (1/3) ... [2022-11-21 16:27:35,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7b2747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:27:35, skipping insertion in model container [2022-11-21 16:27:35,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:25:30" (2/3) ... [2022-11-21 16:27:35,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7b2747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:27:35, skipping insertion in model container [2022-11-21 16:27:35,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:27:35" (3/3) ... [2022-11-21 16:27:35,900 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-21 16:27:35,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:27:35,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:27:35,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:27:35,992 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;@52bcacab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:27:35,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:27:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 16:27:36,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:36,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 16:27:36,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:27:36,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-21 16:27:36,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:27:36,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795958683] [2022-11-21 16:27:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:36,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:27:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:27:36,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:27:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:27:36,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:27:36,593 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:27:36,594 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 16:27:36,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:27:36,601 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-21 16:27:36,605 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:27:36,629 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-21 16:27:36,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:27:36 BoogieIcfgContainer [2022-11-21 16:27:36,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:27:36,640 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:27:36,640 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:27:36,640 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:27:36,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:27:35" (3/4) ... [2022-11-21 16:27:36,644 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 16:27:36,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:27:36,646 INFO L158 Benchmark]: Toolchain (without parser) took 126604.86ms. Allocated memory was 182.5MB in the beginning and 859.8MB in the end (delta: 677.4MB). Free memory was 147.6MB in the beginning and 783.7MB in the end (delta: -636.1MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2022-11-21 16:27:36,646 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:27:36,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 804.88ms. Allocated memory is still 182.5MB. Free memory was 147.6MB in the beginning and 99.4MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-21 16:27:36,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 205.84ms. Allocated memory is still 182.5MB. Free memory was 99.4MB in the beginning and 81.6MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-21 16:27:36,648 INFO L158 Benchmark]: Boogie Preprocessor took 102.81ms. Allocated memory is still 182.5MB. Free memory was 81.6MB in the beginning and 73.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 16:27:36,649 INFO L158 Benchmark]: RCFGBuilder took 124725.13ms. Allocated memory was 182.5MB in the beginning and 859.8MB in the end (delta: 677.4MB). Free memory was 73.2MB in the beginning and 315.4MB in the end (delta: -242.2MB). Peak memory consumption was 466.4MB. Max. memory is 16.1GB. [2022-11-21 16:27:36,650 INFO L158 Benchmark]: TraceAbstraction took 752.29ms. Allocated memory is still 859.8MB. Free memory was 314.4MB in the beginning and 783.7MB in the end (delta: -469.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:27:36,650 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 859.8MB. Free memory is still 783.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:27:36,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 127.9MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 804.88ms. Allocated memory is still 182.5MB. Free memory was 147.6MB in the beginning and 99.4MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 205.84ms. Allocated memory is still 182.5MB. Free memory was 99.4MB in the beginning and 81.6MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.81ms. Allocated memory is still 182.5MB. Free memory was 81.6MB in the beginning and 73.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 124725.13ms. Allocated memory was 182.5MB in the beginning and 859.8MB in the end (delta: 677.4MB). Free memory was 73.2MB in the beginning and 315.4MB in the end (delta: -242.2MB). Peak memory consumption was 466.4MB. Max. memory is 16.1GB. * TraceAbstraction took 752.29ms. Allocated memory is still 859.8MB. Free memory was 314.4MB in the beginning and 783.7MB in the end (delta: -469.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 859.8MB. Free memory is still 783.7MB. There was no memory consumed. 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 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 210, overapproximation of bitwiseOr at line 205, overapproximation of bitwiseAnd at line 172. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_3 var_75 = 0; [L40] const SORT_4 var_77 = 50; [L41] const SORT_2 var_81 = 10; [L42] const SORT_4 var_85 = 1; [L43] const SORT_2 var_91 = 4; [L44] const SORT_4 var_93 = 2; [L45] const SORT_2 var_117 = 12; [L46] const SORT_2 var_140 = 2; [L47] const SORT_2 var_181 = 15; [L49] SORT_1 input_82; [L50] SORT_1 input_92; [L51] SORT_1 input_98; [L52] SORT_1 input_122; [L53] SORT_1 input_125; [L54] SORT_1 input_126; [L55] SORT_1 input_127; [L56] SORT_1 input_128; [L57] SORT_1 input_147; [L58] SORT_1 input_148; [L59] SORT_1 input_170; [L60] SORT_1 input_174; [L61] SORT_1 input_216; [L62] SORT_1 input_219; [L63] SORT_1 input_240; [L64] SORT_1 input_261; [L66] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_2 init_7_arg_1 = var_5; [L102] state_6 = init_7_arg_1 [L103] SORT_2 init_9_arg_1 = var_5; [L104] state_8 = init_9_arg_1 [L105] SORT_2 init_11_arg_1 = var_5; [L106] state_10 = init_11_arg_1 [L107] SORT_2 init_13_arg_1 = var_5; [L108] state_12 = init_13_arg_1 [L109] SORT_2 init_15_arg_1 = var_5; [L110] state_14 = init_15_arg_1 [L111] SORT_2 init_17_arg_1 = var_5; [L112] state_16 = init_17_arg_1 [L113] SORT_2 init_19_arg_1 = var_5; [L114] state_18 = init_19_arg_1 [L115] SORT_2 init_21_arg_1 = var_5; [L116] state_20 = init_21_arg_1 [L117] SORT_2 init_23_arg_1 = var_5; [L118] state_22 = init_23_arg_1 [L119] SORT_2 init_25_arg_1 = var_5; [L120] state_24 = init_25_arg_1 [L121] SORT_2 init_27_arg_1 = var_5; [L122] state_26 = init_27_arg_1 [L123] SORT_2 init_29_arg_1 = var_5; [L124] state_28 = init_29_arg_1 [L125] SORT_1 init_32_arg_1 = var_30; [L126] state_31 = init_32_arg_1 [L127] SORT_1 init_34_arg_1 = var_30; [L128] state_33 = init_34_arg_1 [L129] SORT_1 init_36_arg_1 = var_30; [L130] state_35 = init_36_arg_1 [L131] SORT_1 init_38_arg_1 = var_30; [L132] state_37 = init_38_arg_1 [L133] SORT_1 init_40_arg_1 = var_30; [L134] state_39 = init_40_arg_1 [L135] SORT_1 init_42_arg_1 = var_30; [L136] state_41 = init_42_arg_1 [L137] SORT_1 init_44_arg_1 = var_30; [L138] state_43 = init_44_arg_1 [L139] SORT_1 init_46_arg_1 = var_30; [L140] state_45 = init_46_arg_1 [L141] SORT_1 init_48_arg_1 = var_30; [L142] state_47 = init_48_arg_1 [L143] SORT_1 init_50_arg_1 = var_30; [L144] state_49 = init_50_arg_1 [L145] SORT_1 init_52_arg_1 = var_30; [L146] state_51 = init_52_arg_1 [L147] SORT_1 init_54_arg_1 = var_30; [L148] state_53 = init_54_arg_1 [L149] SORT_1 init_56_arg_1 = var_30; [L150] state_55 = init_56_arg_1 [L151] SORT_1 init_58_arg_1 = var_30; [L152] state_57 = init_58_arg_1 [L153] SORT_1 init_60_arg_1 = var_30; [L154] state_59 = init_60_arg_1 [L155] SORT_1 init_62_arg_1 = var_30; [L156] state_61 = init_62_arg_1 [L157] SORT_1 init_64_arg_1 = var_30; [L158] state_63 = init_64_arg_1 [L159] SORT_1 init_66_arg_1 = var_30; [L160] state_65 = init_66_arg_1 [L161] SORT_1 init_68_arg_1 = var_30; [L162] state_67 = init_68_arg_1 [L163] SORT_1 init_70_arg_1 = var_30; [L164] state_69 = init_70_arg_1 [L165] SORT_1 init_72_arg_1 = var_30; [L166] state_71 = init_72_arg_1 [L167] SORT_1 init_74_arg_1 = var_30; [L168] state_73 = init_74_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_8=0, var_117=12, var_140=2, var_181=15, var_30=0, var_5=0, var_75=0, var_77=50, var_81=10, var_85=1, var_91=4, var_93=2] [L171] input_82 = __VERIFIER_nondet_uchar() [L172] input_82 = input_82 & mask_SORT_1 [L173] input_92 = __VERIFIER_nondet_uchar() [L174] input_92 = input_92 & mask_SORT_1 [L175] input_98 = __VERIFIER_nondet_uchar() [L176] input_98 = input_98 & mask_SORT_1 [L177] input_122 = __VERIFIER_nondet_uchar() [L178] input_122 = input_122 & mask_SORT_1 [L179] input_125 = __VERIFIER_nondet_uchar() [L180] input_125 = input_125 & mask_SORT_1 [L181] input_126 = __VERIFIER_nondet_uchar() [L182] input_126 = input_126 & mask_SORT_1 [L183] input_127 = __VERIFIER_nondet_uchar() [L184] input_127 = input_127 & mask_SORT_1 [L185] input_128 = __VERIFIER_nondet_uchar() [L186] input_128 = input_128 & mask_SORT_1 [L187] input_147 = __VERIFIER_nondet_uchar() [L188] input_147 = input_147 & mask_SORT_1 [L189] input_148 = __VERIFIER_nondet_uchar() [L190] input_148 = input_148 & mask_SORT_1 [L191] input_170 = __VERIFIER_nondet_uchar() [L192] input_170 = input_170 & mask_SORT_1 [L193] input_174 = __VERIFIER_nondet_uchar() [L194] input_174 = input_174 & mask_SORT_1 [L195] input_216 = __VERIFIER_nondet_uchar() [L196] input_216 = input_216 & mask_SORT_1 [L197] input_219 = __VERIFIER_nondet_uchar() [L198] input_219 = input_219 & mask_SORT_1 [L199] input_240 = __VERIFIER_nondet_uchar() [L200] input_261 = __VERIFIER_nondet_uchar() [L203] SORT_3 var_76_arg_0 = var_75; [L204] SORT_2 var_76_arg_1 = state_28; [L205] SORT_4 var_76 = ((SORT_4)var_76_arg_0 << 8) | var_76_arg_1; [L206] var_76 = var_76 & mask_SORT_4 [L207] SORT_4 var_78_arg_0 = var_76; [L208] SORT_4 var_78_arg_1 = var_77; [L209] SORT_1 var_78 = var_78_arg_0 <= var_78_arg_1; [L210] SORT_1 var_79_arg_0 = ~state_73; [L211] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L212] SORT_1 var_79_arg_1 = ~var_78; [L213] var_79_arg_1 = var_79_arg_1 & mask_SORT_1 [L214] SORT_1 var_79 = var_79_arg_0 & var_79_arg_1; [L215] var_79 = var_79 & mask_SORT_1 [L216] SORT_1 bad_80_arg_0 = var_79; [L217] CALL __VERIFIER_assert(!(bad_80_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-21 16:27:36,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/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_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/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 64bit --witnessprinter.graph.data.programhash 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 --- 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 16:27:39,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:27:39,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:27:39,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:27:39,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:27:39,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:27:39,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:27:39,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:27:39,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:27:39,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:27:39,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:27:39,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:27:39,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:27:39,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:27:39,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:27:39,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:27:39,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:27:39,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:27:39,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:27:39,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:27:39,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:27:39,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:27:39,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:27:39,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:27:39,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:27:39,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:27:39,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:27:39,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:27:39,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:27:39,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:27:39,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:27:39,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:27:39,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:27:39,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:27:39,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:27:39,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:27:39,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:27:39,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:27:39,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:27:39,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:27:39,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:27:39,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-21 16:27:39,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:27:39,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:27:39,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:27:39,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:27:39,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:27:39,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:27:39,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:27:39,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:27:39,320 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:27:39,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:27:39,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:27:39,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:27:39,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:27:39,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:27:39,322 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:27:39,322 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 16:27:39,322 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 16:27:39,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:27:39,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:27:39,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:27:39,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:27:39,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:27:39,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:27:39,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:27:39,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:27:39,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:27:39,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:27:39,325 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 16:27:39,326 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 16:27:39,326 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:27:39,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:27:39,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:27:39,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 16:27:39,327 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a59fd885-393a-4c3f-93b9-133341e9b00e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-11-21 16:27:39,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:27:39,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:27:39,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:27:39,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:27:39,700 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:27:39,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-21 16:27:42,839 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:27:43,226 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:27:43,227 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-21 16:27:43,244 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/data/642c04e0e/8ac44562811d4532b182246fc71d7c41/FLAGc1c24a7ed [2022-11-21 16:27:43,278 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/data/642c04e0e/8ac44562811d4532b182246fc71d7c41 [2022-11-21 16:27:43,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:27:43,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:27:43,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:27:43,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:27:43,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:27:43,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:27:43" (1/1) ... [2022-11-21 16:27:43,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ffaf68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:43, skipping insertion in model container [2022-11-21 16:27:43,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:27:43" (1/1) ... [2022-11-21 16:27:43,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:27:43,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:27:43,541 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_a59fd885-393a-4c3f-93b9-133341e9b00e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-21 16:27:43,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:27:43,984 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:27:43,996 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_a59fd885-393a-4c3f-93b9-133341e9b00e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-21 16:27:44,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:27:44,143 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:27:44,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44 WrapperNode [2022-11-21 16:27:44,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:27:44,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:27:44,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:27:44,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:27:44,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,287 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1481 [2022-11-21 16:27:44,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:27:44,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:27:44,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:27:44,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:27:44,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:27:44,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:27:44,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:27:44,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:27:44,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (1/1) ... [2022-11-21 16:27:44,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:27:44,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:27:44,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:27:44,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:27:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:27:44,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:27:44,909 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:27:44,911 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:27:47,013 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:27:47,021 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:27:47,021 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:27:47,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:27:47 BoogieIcfgContainer [2022-11-21 16:27:47,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:27:47,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:27:47,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:27:47,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:27:47,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:27:43" (1/3) ... [2022-11-21 16:27:47,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e42a70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:27:47, skipping insertion in model container [2022-11-21 16:27:47,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:27:44" (2/3) ... [2022-11-21 16:27:47,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e42a70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:27:47, skipping insertion in model container [2022-11-21 16:27:47,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:27:47" (3/3) ... [2022-11-21 16:27:47,037 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-21 16:27:47,057 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:27:47,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:27:47,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:27:47,133 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;@1a8b2f83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:27:47,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:27:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 16:27:47,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:47,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 16:27:47,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:27:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-21 16:27:47,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:27:47,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616282668] [2022-11-21 16:27:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:47,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:27:47,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:27:47,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:27:47,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 16:27:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:47,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 16:27:47,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:27:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:47,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:27:47,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:27:47,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616282668] [2022-11-21 16:27:47,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616282668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:27:47,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:27:47,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:27:47,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662819011] [2022-11-21 16:27:47,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:27:47,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:27:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:27:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:27:47,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:27:47,743 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 16:27:48,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:48,092 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-21 16:27:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:27:48,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 16:27:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:48,104 INFO L225 Difference]: With dead ends: 20 [2022-11-21 16:27:48,105 INFO L226 Difference]: Without dead ends: 11 [2022-11-21 16:27:48,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:27:48,114 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:48,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:27:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-21 16:27:48,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-21 16:27:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:48,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-21 16:27:48,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-21 16:27:48,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:48,153 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-21 16:27:48,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 16:27:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-21 16:27:48,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 16:27:48,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:48,155 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-21 16:27:48,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:27:48,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:27:48,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:27:48,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:48,368 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-21 16:27:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:27:48,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343227883] [2022-11-21 16:27:48,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:27:48,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:27:48,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:27:48,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:27:48,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 16:27:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:27:49,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-21 16:27:49,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:27:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:49,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:27:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:50,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:27:50,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343227883] [2022-11-21 16:27:50,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343227883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:27:50,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:27:50,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-21 16:27:50,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182351915] [2022-11-21 16:27:50,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:27:50,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:27:50,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:27:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:27:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:27:50,948 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:53,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:27:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:27:55,042 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-21 16:27:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:27:55,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-21 16:27:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:27:55,043 INFO L225 Difference]: With dead ends: 19 [2022-11-21 16:27:55,044 INFO L226 Difference]: Without dead ends: 17 [2022-11-21 16:27:55,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:27:55,046 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:27:55,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 18 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 16:27:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-21 16:27:55,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-21 16:27:55,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-21 16:27:55,054 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-21 16:27:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:27:55,055 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-21 16:27:55,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:27:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-21 16:27:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 16:27:55,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:27:55,056 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-21 16:27:55,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:27:55,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:27:55,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:27:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:27:55,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-21 16:27:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:27:55,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527400113] [2022-11-21 16:27:55,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:27:55,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:27:55,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:27:55,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:27:55,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 16:27:56,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:27:56,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:27:57,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-21 16:27:57,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:27:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:27:58,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:28:16,078 WARN L233 SmtUtils]: Spent 14.02s on a formula simplification that was a NOOP. DAG size: 169 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:28:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:16,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:28:16,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527400113] [2022-11-21 16:28:16,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527400113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:28:16,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:28:16,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-21 16:28:16,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381320765] [2022-11-21 16:28:16,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:28:16,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 16:28:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:28:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 16:28:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:28:16,131 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:21,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:28:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:28:28,830 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-21 16:28:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:28:28,831 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-21 16:28:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:28:28,832 INFO L225 Difference]: With dead ends: 31 [2022-11-21 16:28:28,832 INFO L226 Difference]: Without dead ends: 29 [2022-11-21 16:28:28,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2022-11-21 16:28:28,834 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 59 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:28:28,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 24 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 16:28:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-21 16:28:28,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-21 16:28:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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 16:28:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-21 16:28:28,878 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-21 16:28:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:28:28,878 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-21 16:28:28,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:28:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-21 16:28:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-21 16:28:28,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:28:28,881 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-11-21 16:28:28,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:28:29,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:28:29,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:28:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:28:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 3 times [2022-11-21 16:28:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:28:29,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473501820] [2022-11-21 16:28:29,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:28:29,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:28:29,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:28:29,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:28:29,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 16:28:33,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-21 16:28:33,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:28:33,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 8401 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-21 16:28:33,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:28:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:28:39,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:29:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:29:06,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:29:06,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473501820] [2022-11-21 16:29:06,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473501820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:29:06,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:29:06,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-21 16:29:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970089296] [2022-11-21 16:29:06,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:29:06,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-21 16:29:06,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:29:06,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-21 16:29:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2022-11-21 16:29:06,371 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 36 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:29:26,671 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 1145 DAG size of output: 1113 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:29:28,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:29:30,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:29:32,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-21 16:29:45,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:29:47,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:29:48,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:29:50,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:29:53,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:29:55,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:07,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:08,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:10,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:12,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:15,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:24,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:26,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:28,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:36,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:40,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:45,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:30:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:30:51,299 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2022-11-21 16:30:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-21 16:30:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-21 16:30:51,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:30:51,301 INFO L225 Difference]: With dead ends: 55 [2022-11-21 16:30:51,301 INFO L226 Difference]: Without dead ends: 53 [2022-11-21 16:30:51,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 77.9s TimeCoverageRelationStatistics Valid=1207, Invalid=2699, Unknown=0, NotChecked=0, Total=3906 [2022-11-21 16:30:51,305 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 164 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 89 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:30:51,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 30 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 86 Invalid, 13 Unknown, 0 Unchecked, 52.3s Time] [2022-11-21 16:30:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-21 16:30:51,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-11-21 16:30:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-11-21 16:30:51,366 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2022-11-21 16:30:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:30:51,367 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-11-21 16:30:51,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-11-21 16:30:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-21 16:30:51,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:30:51,369 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2022-11-21 16:30:51,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:30:51,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:30:51,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:30:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:51,590 INFO L85 PathProgramCache]: Analyzing trace with hash -779438813, now seen corresponding path program 4 times [2022-11-21 16:30:51,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:30:51,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732060568] [2022-11-21 16:30:51,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:30:51,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:30:51,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:30:51,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 16:30:51,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59fd885-393a-4c3f-93b9-133341e9b00e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 16:30:59,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:30:59,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:30:59,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 17865 conjuncts, 232 conjunts are in the unsatisfiable core [2022-11-21 16:30:59,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:03,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:34:10,587 WARN L233 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 2308 DAG size of output: 1416 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:34:49,792 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 2756 DAG size of output: 1671 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:35:15,388 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 1675 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:35:41,312 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 3264 DAG size of output: 1976 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:36:16,279 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification that was a NOOP. DAG size: 1980 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:36:46,300 WARN L233 SmtUtils]: Spent 10.45s on a formula simplification. DAG size of input: 3872 DAG size of output: 2321 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:37:25,409 WARN L233 SmtUtils]: Spent 7.68s on a formula simplification that was a NOOP. DAG size: 2325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:38:03,954 WARN L233 SmtUtils]: Spent 12.32s on a formula simplification. DAG size of input: 4560 DAG size of output: 2616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:38:51,183 WARN L233 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 2620 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:38:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:38:51,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:38:51,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732060568] [2022-11-21 16:38:51,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732060568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:38:51,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:38:51,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 70 [2022-11-21 16:38:51,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175751505] [2022-11-21 16:38:51,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:38:51,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-21 16:38:51,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:38:51,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-21 16:38:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1421, Invalid=3406, Unknown=3, NotChecked=0, Total=4830 [2022-11-21 16:38:51,495 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 70 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 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)