./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc --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 cd96e0219f5c367576fbd54c644e4c7642dcebe67747e9fbd5a25075ee4f799f --- 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-5e519f3 [2022-11-02 21:11:37,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:11:37,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:11:37,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:11:37,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:11:37,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:11:37,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:11:37,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:11:37,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:11:37,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:11:37,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:11:37,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:11:37,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:11:37,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:11:37,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:11:37,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:11:37,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:11:37,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:11:37,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:11:37,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:11:37,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:11:37,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:11:37,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:11:37,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:11:37,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:11:37,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:11:37,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:11:37,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:11:37,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:11:37,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:11:37,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:11:37,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:11:37,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:11:37,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:11:37,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:11:37,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:11:37,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:11:37,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:11:37,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:11:37,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:11:37,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:11:37,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:11:37,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:11:37,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:11:37,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:11:37,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:11:37,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:11:37,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:11:37,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:11:37,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:11:37,216 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:11:37,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:11:37,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:11:37,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:11:37,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:11:37,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:11:37,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:11:37,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:11:37,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:11:37,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:11:37,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:11:37,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:11:37,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:11:37,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:37,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:11:37,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:11:37,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:11:37,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:11:37,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:11:37,222 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:11:37,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:11:37,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:11:37,223 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_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd96e0219f5c367576fbd54c644e4c7642dcebe67747e9fbd5a25075ee4f799f [2022-11-02 21:11:37,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:11:37,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:11:37,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:11:37,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:11:37,637 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:11:37,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-02 21:11:37,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data/71a4a0e7e/74cdb789c7d147c284f182d26e027c7a/FLAG2b570b924 [2022-11-02 21:11:38,306 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:11:38,310 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-02 21:11:38,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data/71a4a0e7e/74cdb789c7d147c284f182d26e027c7a/FLAG2b570b924 [2022-11-02 21:11:38,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data/71a4a0e7e/74cdb789c7d147c284f182d26e027c7a [2022-11-02 21:11:38,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:11:38,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:11:38,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:38,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:11:38,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:11:38,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:38" (1/1) ... [2022-11-02 21:11:38,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fa3276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:38, skipping insertion in model container [2022-11-02 21:11:38,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:38" (1/1) ... [2022-11-02 21:11:38,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:11:38,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:11:38,853 WARN L230 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_3fbcf417-51f4-498b-be1a-c608d041067b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c[1107,1120] [2022-11-02 21:11:38,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:38,943 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:11:38,954 WARN L230 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_3fbcf417-51f4-498b-be1a-c608d041067b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c[1107,1120] [2022-11-02 21:11:39,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:39,015 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:11:39,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39 WrapperNode [2022-11-02 21:11:39,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:39,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:39,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:11:39,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:11:39,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,082 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-11-02 21:11:39,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:39,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:11:39,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:11:39,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:11:39,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:11:39,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:11:39,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:11:39,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:11:39,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (1/1) ... [2022-11-02 21:11:39,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:39,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:39,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:11:39,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:11:39,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:11:39,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:11:39,313 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:11:39,315 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:11:39,661 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:11:39,668 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:11:39,668 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:11:39,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:39 BoogieIcfgContainer [2022-11-02 21:11:39,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:11:39,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:11:39,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:11:39,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:11:39,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:11:38" (1/3) ... [2022-11-02 21:11:39,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2166c545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:39, skipping insertion in model container [2022-11-02 21:11:39,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:39" (2/3) ... [2022-11-02 21:11:39,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2166c545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:39, skipping insertion in model container [2022-11-02 21:11:39,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:39" (3/3) ... [2022-11-02 21:11:39,690 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-02 21:11:39,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:11:39,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:11:39,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:11:39,809 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;@2a743a54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:11:39,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:11:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-02 21:11:39,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:11:39,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:39,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:11:39,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:11:39,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:39,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569316600] [2022-11-02 21:11:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:40,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:40,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:40,452 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:11:40,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:11:40,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:11:40,460 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:11:40,465 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:11:40,493 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:11:40,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:11:40 BoogieIcfgContainer [2022-11-02 21:11:40,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:11:40,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:11:40,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:11:40,506 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:11:40,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:39" (3/4) ... [2022-11-02 21:11:40,510 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:11:40,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:11:40,512 INFO L158 Benchmark]: Toolchain (without parser) took 1852.52ms. Allocated memory is still 104.9MB. Free memory was 68.1MB in the beginning and 63.0MB in the end (delta: 5.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-02 21:11:40,513 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:11:40,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.65ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 79.6MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:11:40,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.77ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 77.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:11:40,516 INFO L158 Benchmark]: Boogie Preprocessor took 57.21ms. Allocated memory is still 104.9MB. Free memory was 77.2MB in the beginning and 75.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:11:40,523 INFO L158 Benchmark]: RCFGBuilder took 524.23ms. Allocated memory is still 104.9MB. Free memory was 75.9MB in the beginning and 59.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 21:11:40,524 INFO L158 Benchmark]: TraceAbstraction took 832.84ms. Allocated memory is still 104.9MB. Free memory was 58.3MB in the beginning and 63.3MB in the end (delta: -5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:11:40,526 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 104.9MB. Free memory was 63.3MB in the beginning and 63.0MB in the end (delta: 385.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:11:40,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 104.9MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.65ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 79.6MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.77ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 77.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.21ms. Allocated memory is still 104.9MB. Free memory was 77.2MB in the beginning and 75.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.23ms. Allocated memory is still 104.9MB. Free memory was 75.9MB in the beginning and 59.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 832.84ms. Allocated memory is still 104.9MB. Free memory was 58.3MB in the beginning and 63.3MB in the end (delta: -5.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 104.9MB. Free memory was 63.3MB in the beginning and 63.0MB in the end (delta: 385.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 102, overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 88. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 3); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (3 - 1); [L37] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 2); [L38] const SORT_14 msb_SORT_14 = (SORT_14)1 << (2 - 1); [L40] const SORT_7 var_8 = 0; [L41] const SORT_1 var_12 = 0; [L42] const SORT_14 var_16 = 0; [L43] const SORT_1 var_21 = 1; [L44] const SORT_7 var_50 = 1; [L45] const SORT_7 var_52 = 4; [L47] SORT_1 input_2; [L48] SORT_3 input_4; [L49] SORT_5 input_6; [L50] SORT_3 input_25; [L51] SORT_3 input_27; [L52] SORT_3 input_29; [L53] SORT_1 input_31; [L54] SORT_5 input_33; [L55] SORT_3 input_35; [L56] SORT_3 input_37; [L57] SORT_3 input_39; [L58] SORT_3 input_41; [L59] SORT_3 input_43; [L60] SORT_3 input_45; [L61] SORT_3 input_47; [L63] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L65] SORT_7 init_10_arg_1 = var_8; [L66] state_9 = init_10_arg_1 VAL [init_10_arg_1=0, mask_SORT_1=1, mask_SORT_14=3, mask_SORT_3=31, mask_SORT_5=4095, mask_SORT_7=7, msb_SORT_1=1, msb_SORT_14=2, msb_SORT_3=16, msb_SORT_5=2048, msb_SORT_7=4, state_9=0, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L69] input_2 = __VERIFIER_nondet_uchar() [L70] input_4 = __VERIFIER_nondet_uchar() [L71] input_6 = __VERIFIER_nondet_ushort() [L72] input_25 = __VERIFIER_nondet_uchar() [L73] input_27 = __VERIFIER_nondet_uchar() [L74] input_29 = __VERIFIER_nondet_uchar() [L75] input_31 = __VERIFIER_nondet_uchar() [L76] input_33 = __VERIFIER_nondet_ushort() [L77] input_35 = __VERIFIER_nondet_uchar() [L78] input_37 = __VERIFIER_nondet_uchar() [L79] input_39 = __VERIFIER_nondet_uchar() [L80] input_41 = __VERIFIER_nondet_uchar() [L81] input_43 = __VERIFIER_nondet_uchar() [L82] input_45 = __VERIFIER_nondet_uchar() [L83] input_47 = __VERIFIER_nondet_uchar() [L86] SORT_7 var_11_arg_0 = state_9; [L87] SORT_1 var_11 = var_11_arg_0 >> 2; [L88] var_11 = var_11 & mask_SORT_1 [L89] SORT_1 var_13_arg_0 = var_11; [L90] SORT_1 var_13_arg_1 = var_12; [L91] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L92] SORT_7 var_15_arg_0 = state_9; [L93] SORT_14 var_15 = var_15_arg_0 >> 0; [L94] var_15 = var_15 & mask_SORT_14 [L95] SORT_14 var_17_arg_0 = var_15; [L96] SORT_14 var_17_arg_1 = var_16; [L97] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L98] SORT_1 var_18_arg_0 = var_13; [L99] SORT_1 var_18_arg_1 = var_17; [L100] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L101] SORT_1 var_22_arg_0 = var_18; [L102] SORT_1 var_22 = ~var_22_arg_0; [L103] SORT_1 var_23_arg_0 = var_21; [L104] SORT_1 var_23_arg_1 = var_22; [L105] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L106] var_23 = var_23 & mask_SORT_1 [L107] SORT_1 bad_24_arg_0 = var_23; [L108] CALL __VERIFIER_assert(!(bad_24_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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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=13occurred 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 [2022-11-02 21:11:40,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc --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 cd96e0219f5c367576fbd54c644e4c7642dcebe67747e9fbd5a25075ee4f799f --- 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-5e519f3 [2022-11-02 21:11:43,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:11:43,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:11:43,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:11:43,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:11:43,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:11:43,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:11:43,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:11:43,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:11:43,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:11:43,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:11:43,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:11:43,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:11:43,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:11:43,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:11:43,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:11:43,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:11:43,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:11:43,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:11:43,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:11:43,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:11:43,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:11:43,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:11:43,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:11:43,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:11:43,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:11:43,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:11:43,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:11:43,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:11:43,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:11:43,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:11:43,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:11:43,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:11:43,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:11:43,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:11:43,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:11:43,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:11:43,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:11:43,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:11:43,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:11:43,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:11:43,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:11:43,211 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:11:43,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:11:43,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:11:43,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:11:43,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:11:43,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:11:43,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:11:43,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:11:43,217 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:11:43,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:11:43,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:11:43,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:11:43,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:11:43,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:11:43,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:11:43,220 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:11:43,220 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:11:43,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:11:43,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:11:43,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:11:43,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:11:43,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:11:43,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:11:43,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:43,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:11:43,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:11:43,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:11:43,223 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:11:43,224 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:11:43,224 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:11:43,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:11:43,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:11:43,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:11:43,225 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_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd96e0219f5c367576fbd54c644e4c7642dcebe67747e9fbd5a25075ee4f799f [2022-11-02 21:11:43,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:11:43,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:11:43,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:11:43,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:11:43,674 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:11:43,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-02 21:11:43,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data/980474169/8542a209304b4ee69240b633b230c697/FLAGdc99982e1 [2022-11-02 21:11:44,260 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:11:44,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-02 21:11:44,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data/980474169/8542a209304b4ee69240b633b230c697/FLAGdc99982e1 [2022-11-02 21:11:44,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/data/980474169/8542a209304b4ee69240b633b230c697 [2022-11-02 21:11:44,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:11:44,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:11:44,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:44,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:11:44,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:11:44,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:44,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f891e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44, skipping insertion in model container [2022-11-02 21:11:44,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:44,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:11:44,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:11:44,822 WARN L230 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_3fbcf417-51f4-498b-be1a-c608d041067b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c[1107,1120] [2022-11-02 21:11:44,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:44,902 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:11:44,928 WARN L230 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_3fbcf417-51f4-498b-be1a-c608d041067b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c[1107,1120] [2022-11-02 21:11:44,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:44,976 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:11:44,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44 WrapperNode [2022-11-02 21:11:44,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:44,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:44,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:11:44,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:11:44,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:44,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,013 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-11-02 21:11:45,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:45,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:11:45,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:11:45,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:11:45,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,038 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:11:45,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:11:45,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:11:45,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:11:45,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (1/1) ... [2022-11-02 21:11:45,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:45,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:45,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:11:45,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:11:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:11:45,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:11:45,225 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:11:45,228 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:11:45,432 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:11:45,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:11:45,440 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:11:45,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:45 BoogieIcfgContainer [2022-11-02 21:11:45,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:11:45,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:11:45,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:11:45,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:11:45,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:11:44" (1/3) ... [2022-11-02 21:11:45,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea4126f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:45, skipping insertion in model container [2022-11-02 21:11:45,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:44" (2/3) ... [2022-11-02 21:11:45,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea4126f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:45, skipping insertion in model container [2022-11-02 21:11:45,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:45" (3/3) ... [2022-11-02 21:11:45,452 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p04.c [2022-11-02 21:11:45,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:11:45,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:11:45,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:11:45,553 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;@38269e24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:11:45,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:11:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-02 21:11:45,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:11:45,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:45,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:11:45,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:45,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:11:45,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152959184] [2022-11-02 21:11:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:45,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:45,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:45,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:45,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:11:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:45,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:11:45,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:46,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:46,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:46,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152959184] [2022-11-02 21:11:46,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152959184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:46,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:46,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:11:46,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314710680] [2022-11-02 21:11:46,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:46,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:46,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:46,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:46,112 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-02 21:11:46,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:46,189 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2022-11-02 21:11:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:46,193 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 [2022-11-02 21:11:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:46,208 INFO L225 Difference]: With dead ends: 26 [2022-11-02 21:11:46,208 INFO L226 Difference]: Without dead ends: 15 [2022-11-02 21:11:46,211 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 [2022-11-02 21:11:46,215 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:46,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-02 21:11:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2022-11-02 21:11:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-02 21:11:46,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2022-11-02 21:11:46,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:46,249 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-02 21:11:46,249 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) [2022-11-02 21:11:46,250 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-02 21:11:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 21:11:46,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:46,251 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:46,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:46,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:46,462 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:46,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1478823361, now seen corresponding path program 1 times [2022-11-02 21:11:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:46,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517282487] [2022-11-02 21:11:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:46,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:46,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:46,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:46,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:11:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:46,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:11:46,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:46,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:46,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:46,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517282487] [2022-11-02 21:11:46,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517282487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:46,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:46,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:11:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453042132] [2022-11-02 21:11:46,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:46,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:46,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:46,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:46,612 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:46,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:46,658 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-02 21:11:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:46,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 21:11:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:46,661 INFO L225 Difference]: With dead ends: 27 [2022-11-02 21:11:46,662 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 21:11:46,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:46,666 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:46,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 21:11:46,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-11-02 21:11:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2022-11-02 21:11:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-02 21:11:46,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2022-11-02 21:11:46,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:46,677 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-02 21:11:46,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-02 21:11:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 21:11:46,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:46,679 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:46,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:46,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:46,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1476976319, now seen corresponding path program 1 times [2022-11-02 21:11:46,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:46,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811626706] [2022-11-02 21:11:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:46,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:46,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:46,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:46,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:11:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:46,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:11:46,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:47,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:47,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811626706] [2022-11-02 21:11:47,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811626706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:47,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:47,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 21:11:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185840169] [2022-11-02 21:11:47,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:11:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:11:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:11:47,700 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2022-11-02 21:11:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:47,822 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-11-02 21:11:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:11:47,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 21:11:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:47,823 INFO L225 Difference]: With dead ends: 22 [2022-11-02 21:11:47,824 INFO L226 Difference]: Without dead ends: 20 [2022-11-02 21:11:47,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:11:47,825 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:47,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 47 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-02 21:11:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-02 21:11:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-11-02 21:11:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-11-02 21:11:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-02 21:11:47,831 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2022-11-02 21:11:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:47,832 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-02 21:11:47,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2022-11-02 21:11:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-02 21:11:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:11:47,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:47,833 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:47,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:48,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:48,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:48,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1952945017, now seen corresponding path program 1 times [2022-11-02 21:11:48,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:48,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661728012] [2022-11-02 21:11:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:48,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:48,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:48,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:11:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:48,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 21:11:48,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:48,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:48,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:48,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661728012] [2022-11-02 21:11:48,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661728012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:48,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:48,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 21:11:48,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148022916] [2022-11-02 21:11:48,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:48,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:11:48,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:11:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:11:48,409 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:48,523 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-02 21:11:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:11:48,524 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 21:11:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:48,524 INFO L225 Difference]: With dead ends: 28 [2022-11-02 21:11:48,525 INFO L226 Difference]: Without dead ends: 21 [2022-11-02 21:11:48,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:11:48,534 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:48,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 45 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-02 21:11:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-02 21:11:48,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-11-02 21:11:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-02 21:11:48,539 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2022-11-02 21:11:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:48,539 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-02 21:11:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-02 21:11:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:11:48,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:48,541 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 21:11:48,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:48,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:48,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1951097975, now seen corresponding path program 2 times [2022-11-02 21:11:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:48,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263660509] [2022-11-02 21:11:48,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:11:48,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:48,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:48,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:48,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:11:48,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:11:48,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:48,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 21:11:48,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:49,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:50,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:50,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263660509] [2022-11-02 21:11:50,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263660509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:50,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:50,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:11:50,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675298793] [2022-11-02 21:11:50,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:50,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:11:50,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:11:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:11:50,209 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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) [2022-11-02 21:11:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:51,280 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-11-02 21:11:51,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:11:51,282 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 21:11:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:51,283 INFO L225 Difference]: With dead ends: 32 [2022-11-02 21:11:51,283 INFO L226 Difference]: Without dead ends: 30 [2022-11-02 21:11:51,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2022-11-02 21:11:51,284 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 47 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:51,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 67 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 103 Unchecked, 0.1s Time] [2022-11-02 21:11:51,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-02 21:11:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2022-11-02 21:11:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-11-02 21:11:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-02 21:11:51,292 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2022-11-02 21:11:51,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:51,293 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-02 21:11:51,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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) [2022-11-02 21:11:51,293 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-02 21:11:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 21:11:51,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:51,294 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2022-11-02 21:11:51,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:51,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:51,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:51,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:51,503 INFO L85 PathProgramCache]: Analyzing trace with hash 538189631, now seen corresponding path program 2 times [2022-11-02 21:11:51,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:51,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364390505] [2022-11-02 21:11:51,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:11:51,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:51,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:51,505 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:51,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:11:51,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:11:51,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:51,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:11:51,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:51,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:52,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:52,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364390505] [2022-11-02 21:11:52,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364390505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:52,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:52,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-02 21:11:52,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33634724] [2022-11-02 21:11:52,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:52,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 21:11:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 21:11:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:11:52,331 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 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) [2022-11-02 21:11:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:52,873 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-11-02 21:11:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:11:52,874 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 21:11:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:52,875 INFO L225 Difference]: With dead ends: 42 [2022-11-02 21:11:52,875 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 21:11:52,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2022-11-02 21:11:52,879 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 47 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:52,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 63 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-11-02 21:11:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 21:11:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-02 21:11:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 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) [2022-11-02 21:11:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-02 21:11:52,892 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 20 [2022-11-02 21:11:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:52,892 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-02 21:11:52,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 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) [2022-11-02 21:11:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-02 21:11:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:11:52,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:52,899 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-02 21:11:52,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:53,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:53,111 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 422547081, now seen corresponding path program 3 times [2022-11-02 21:11:53,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:53,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108727403] [2022-11-02 21:11:53,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:11:53,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:53,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:53,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:53,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:11:53,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 21:11:53,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:53,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-02 21:11:53,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 21:11:54,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:10,422 WARN L234 SmtUtils]: Spent 12.60s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 21:12:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 21:12:12,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:12,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108727403] [2022-11-02 21:12:12,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108727403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:12,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:12,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:12:12,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60013977] [2022-11-02 21:12:12,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:12,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:12:12,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:12,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:12:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=257, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:12:12,637 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 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) [2022-11-02 21:12:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:13,346 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-11-02 21:12:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:12:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 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 25 [2022-11-02 21:12:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:13,347 INFO L225 Difference]: With dead ends: 37 [2022-11-02 21:12:13,347 INFO L226 Difference]: Without dead ends: 35 [2022-11-02 21:12:13,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=130, Invalid=519, Unknown=1, NotChecked=0, Total=650 [2022-11-02 21:12:13,349 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:13,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 63 Unchecked, 0.0s Time] [2022-11-02 21:12:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-02 21:12:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-11-02 21:12:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2022-11-02 21:12:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-11-02 21:12:13,358 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 25 [2022-11-02 21:12:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:13,358 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-11-02 21:12:13,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 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) [2022-11-02 21:12:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-11-02 21:12:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:12:13,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:13,360 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2022-11-02 21:12:13,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 21:12:13,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:13,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:13,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1736897473, now seen corresponding path program 3 times [2022-11-02 21:12:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:13,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383085751] [2022-11-02 21:12:13,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:12:13,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:13,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:13,574 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:13,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:12:13,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:12:13,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:13,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 21:12:13,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:12:13,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:12:14,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:14,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383085751] [2022-11-02 21:12:14,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383085751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:14,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:14,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 21:12:14,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481922522] [2022-11-02 21:12:14,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:14,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:12:14,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:12:14,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:12:14,698 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:14,983 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2022-11-02 21:12:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:12:14,986 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-02 21:12:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:14,986 INFO L225 Difference]: With dead ends: 44 [2022-11-02 21:12:14,986 INFO L226 Difference]: Without dead ends: 42 [2022-11-02 21:12:14,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:12:14,987 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:14,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 31 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-11-02 21:12:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-02 21:12:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2022-11-02 21:12:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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) [2022-11-02 21:12:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-11-02 21:12:15,001 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 30 [2022-11-02 21:12:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:15,001 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-11-02 21:12:15,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-11-02 21:12:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 21:12:15,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:15,003 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 1, 1, 1, 1, 1] [2022-11-02 21:12:15,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:15,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:15,217 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:15,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1018962101, now seen corresponding path program 4 times [2022-11-02 21:12:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:15,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385356111] [2022-11-02 21:12:15,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:12:15,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:15,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:15,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:15,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:12:15,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:12:15,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:15,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 21:12:15,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:12:15,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:12:17,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:17,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385356111] [2022-11-02 21:12:17,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385356111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:17,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:17,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:12:17,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759443328] [2022-11-02 21:12:17,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:17,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:12:17,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:17,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:12:17,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:17,113 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 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) [2022-11-02 21:12:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:18,116 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2022-11-02 21:12:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:12:18,116 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-02 21:12:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:18,117 INFO L225 Difference]: With dead ends: 58 [2022-11-02 21:12:18,117 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:12:18,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 21:12:18,119 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:18,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 49 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 102 Unchecked, 0.1s Time] [2022-11-02 21:12:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:12:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2022-11-02 21:12:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-11-02 21:12:18,128 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 35 [2022-11-02 21:12:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:18,129 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-11-02 21:12:18,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 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) [2022-11-02 21:12:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-11-02 21:12:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-02 21:12:18,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:18,130 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 1, 1, 1, 1, 1] [2022-11-02 21:12:18,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:18,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:18,339 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:18,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:18,339 INFO L85 PathProgramCache]: Analyzing trace with hash 437684171, now seen corresponding path program 5 times [2022-11-02 21:12:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:18,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782351735] [2022-11-02 21:12:18,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:12:18,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:18,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:18,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:12:18,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-02 21:12:18,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:18,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:12:18,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:12:19,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:12:22,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:22,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782351735] [2022-11-02 21:12:22,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782351735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:22,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:22,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-02 21:12:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006826686] [2022-11-02 21:12:22,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:22,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:12:22,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:12:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:12:22,625 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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) [2022-11-02 21:12:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:24,065 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2022-11-02 21:12:24,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 21:12:24,065 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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 45 [2022-11-02 21:12:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:24,066 INFO L225 Difference]: With dead ends: 65 [2022-11-02 21:12:24,066 INFO L226 Difference]: Without dead ends: 63 [2022-11-02 21:12:24,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=424, Invalid=2126, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 21:12:24,068 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 47 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:24,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 89 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 153 Invalid, 0 Unknown, 214 Unchecked, 0.2s Time] [2022-11-02 21:12:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-02 21:12:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2022-11-02 21:12:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2022-11-02 21:12:24,079 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 45 [2022-11-02 21:12:24,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:24,079 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2022-11-02 21:12:24,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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) [2022-11-02 21:12:24,080 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2022-11-02 21:12:24,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 21:12:24,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:24,081 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 1, 1, 1, 1, 1] [2022-11-02 21:12:24,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-11-02 21:12:24,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:24,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1899906241, now seen corresponding path program 6 times [2022-11-02 21:12:24,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:24,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469349343] [2022-11-02 21:12:24,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:12:24,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:24,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:24,291 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:24,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:12:24,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-02 21:12:24,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:24,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-02 21:12:24,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-02 21:12:26,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:41,926 WARN L234 SmtUtils]: Spent 13.50s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 21:12:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-02 21:12:50,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:50,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469349343] [2022-11-02 21:12:50,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469349343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:50,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:50,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:12:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024761221] [2022-11-02 21:12:50,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:50,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:12:50,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:50,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:12:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:50,527 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 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) [2022-11-02 21:12:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:52,125 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-11-02 21:12:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:12:52,126 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 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 50 [2022-11-02 21:12:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:52,126 INFO L225 Difference]: With dead ends: 51 [2022-11-02 21:12:52,127 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 21:12:52,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:12:52,128 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:52,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 50 Unchecked, 0.0s Time] [2022-11-02 21:12:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 21:12:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 21:12:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 21:12:52,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2022-11-02 21:12:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:52,131 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:12:52,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 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) [2022-11-02 21:12:52,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:12:52,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 21:12:52,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:12:52,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:52,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:52,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 21:12:53,204 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 21:12:53,205 INFO L895 garLoopResultBuilder]: At program point L67-2(lines 67 124) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= |ULTIMATE.start_main_~var_16~0#1| (_ bv0 8))) (.cse2 (= (_ bv7 8) |ULTIMATE.start_main_~mask_SORT_7~0#1|)) (.cse3 (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_14~0#1|)) (.cse4 (= |ULTIMATE.start_main_~var_8~0#1| (_ bv0 8))) (.cse5 (= (_ bv4 8) |ULTIMATE.start_main_~var_52~0#1|)) (.cse6 (= (_ bv1 8) |ULTIMATE.start_main_~var_50~0#1|)) (.cse7 (= |ULTIMATE.start_main_~var_12~0#1| (_ bv0 8))) (.cse8 (= (_ bv1 8) |ULTIMATE.start_main_~var_21~0#1|))) (or (and .cse0 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~var_54_arg_1~0#1| (_ bv0 8)) .cse4 .cse5 .cse6 .cse7 .cse8 (exists ((|v_ULTIMATE.start_main_#t~ite16#1_60| (_ BitVec 32))) (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) |v_ULTIMATE.start_main_#t~ite16#1_60|)) (_ bv7 32)))))) (and (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse9 (_ bv2 32)))) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|)))) ((_ zero_extend 24) |ULTIMATE.start_main_~var_12~0#1|)) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse9 (_ bv1 32)))))) (_ bv7 32))) |ULTIMATE.start_main_~state_9~0#1|))))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~state_9~0#1| (_ bv0 8)) .cse6 .cse7 .cse8))) [2022-11-02 21:12:53,205 INFO L899 garLoopResultBuilder]: For program point L67-3(lines 67 124) no Hoare annotation was computed. [2022-11-02 21:12:53,205 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 21:12:53,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 21:12:53,206 INFO L895 garLoopResultBuilder]: At program point L125(lines 22 126) the Hoare annotation is: false [2022-11-02 21:12:53,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 21:12:53,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-02 21:12:53,206 INFO L899 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2022-11-02 21:12:53,207 INFO L899 garLoopResultBuilder]: For program point L119-2(line 119) no Hoare annotation was computed. [2022-11-02 21:12:53,207 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-02 21:12:53,207 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-02 21:12:53,207 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-02 21:12:53,211 INFO L444 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1] [2022-11-02 21:12:53,214 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:12:53,223 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 21:12:53,224 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 21:12:53,230 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 21:12:53,231 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 21:12:53,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:12:53 BoogieIcfgContainer [2022-11-02 21:12:53,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:12:53,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:12:53,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:12:53,233 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:12:53,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:45" (3/4) ... [2022-11-02 21:12:53,237 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:12:53,247 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-02 21:12:53,248 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-02 21:12:53,248 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:12:53,274 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((1bv8 == mask_SORT_1 && !(cond == 0bv32)) && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && 3bv8 == mask_SORT_14) && var_54_arg_1 == 0bv8) && var_8 == 0bv8) && 4bv8 == var_52) && 1bv8 == var_50) && var_12 == 0bv8) && 1bv8 == var_21) && (\exists v_ULTIMATE.start_main_#t~ite16#1_60 : bv32 :: ~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~bvashr32(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(v_ULTIMATE.start_main_#t~ite16#1_60[7:0]), 7bv32)[7:0]), 2bv32)[7:0]), ~zero_extendFrom16To32(mask_SORT_1))[7:0]) == ~zero_extendFrom16To32(var_12) && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(v_ULTIMATE.start_main_#t~ite16#1_60[7:0]), 7bv32)[7:0]), 1bv32)[7:0])[7:0]), 7bv32)[7:0] == state_9)) || (((((((((1bv8 == mask_SORT_1 && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && 3bv8 == mask_SORT_14) && var_8 == 0bv8) && 4bv8 == var_52) && state_9 == 0bv8) && 1bv8 == var_50) && var_12 == 0bv8) && 1bv8 == var_21) [2022-11-02 21:12:53,280 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-02 21:12:53,283 INFO L158 Benchmark]: Toolchain (without parser) took 68640.84ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 50.9MB in the beginning and 54.0MB in the end (delta: -3.1MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2022-11-02 21:12:53,283 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory was 31.8MB in the beginning and 31.8MB in the end (delta: 71.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:53,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.67ms. Allocated memory is still 75.5MB. Free memory was 50.6MB in the beginning and 56.5MB in the end (delta: -5.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:12:53,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.95ms. Allocated memory is still 75.5MB. Free memory was 56.5MB in the beginning and 54.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:12:53,284 INFO L158 Benchmark]: Boogie Preprocessor took 27.43ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 53.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:53,285 INFO L158 Benchmark]: RCFGBuilder took 399.35ms. Allocated memory is still 75.5MB. Free memory was 53.1MB in the beginning and 40.8MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:12:53,285 INFO L158 Benchmark]: TraceAbstraction took 67787.93ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 40.0MB in the beginning and 56.1MB in the end (delta: -16.1MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2022-11-02 21:12:53,286 INFO L158 Benchmark]: Witness Printer took 49.81ms. Allocated memory is still 134.2MB. Free memory was 56.1MB in the beginning and 54.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:12:53,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory was 31.8MB in the beginning and 31.8MB in the end (delta: 71.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.67ms. Allocated memory is still 75.5MB. Free memory was 50.6MB in the beginning and 56.5MB in the end (delta: -5.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.95ms. Allocated memory is still 75.5MB. Free memory was 56.5MB in the beginning and 54.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.43ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 53.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 399.35ms. Allocated memory is still 75.5MB. Free memory was 53.1MB in the beginning and 40.8MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 67787.93ms. Allocated memory was 75.5MB in the beginning and 134.2MB in the end (delta: 58.7MB). Free memory was 40.0MB in the beginning and 56.1MB in the end (delta: -16.1MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Witness Printer took 49.81ms. Allocated memory is still 134.2MB. Free memory was 56.1MB in the beginning and 54.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.7s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 276 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 276 mSDsluCounter, 515 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 674 IncrementalHoareTripleChecker+Unchecked, 444 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 379 IncrementalHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 71 mSDtfsCounter, 379 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 590 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 43.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=10, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 59 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 12 NumberOfFragments, 107 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3262 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 2008 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 55.7s InterpolantComputationTime, 260 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 485 ConstructedInterpolants, 213 QuantifiedInterpolants, 39931 SizeOfPredicates, 363 NumberOfNonLiveVariables, 2179 ConjunctsInSsa, 377 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 601/1162 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 67]: Loop Invariant [2022-11-02 21:12:53,294 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 21:12:53,295 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 21:12:53,296 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] [2022-11-02 21:12:53,296 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ite16#1_60,QUANTIFIED] Derived loop invariant: (((((((((((1bv8 == mask_SORT_1 && !(cond == 0bv32)) && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && 3bv8 == mask_SORT_14) && var_54_arg_1 == 0bv8) && var_8 == 0bv8) && 4bv8 == var_52) && 1bv8 == var_50) && var_12 == 0bv8) && 1bv8 == var_21) && (\exists v_ULTIMATE.start_main_#t~ite16#1_60 : bv32 :: ~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(~bvashr32(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(v_ULTIMATE.start_main_#t~ite16#1_60[7:0]), 7bv32)[7:0]), 2bv32)[7:0]), ~zero_extendFrom16To32(mask_SORT_1))[7:0]) == ~zero_extendFrom16To32(var_12) && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~bvadd64(~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(v_ULTIMATE.start_main_#t~ite16#1_60[7:0]), 7bv32)[7:0]), 1bv32)[7:0])[7:0]), 7bv32)[7:0] == state_9)) || (((((((((1bv8 == mask_SORT_1 && var_16 == 0bv8) && 7bv8 == mask_SORT_7) && 3bv8 == mask_SORT_14) && var_8 == 0bv8) && 4bv8 == var_52) && state_9 == 0bv8) && 1bv8 == var_50) && var_12 == 0bv8) && 1bv8 == var_21) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-02 21:12:53,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fbcf417-51f4-498b-be1a-c608d041067b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null