./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.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_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/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_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/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_829b6212-9854-4837-a6ec-6098ace5241d/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 75db22900e7229cbb182c0d88ebf0bfd4f203465a743dcb7e2df3ea71652a755 --- 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 21:11:53,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:11:53,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:11:53,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:11:53,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:11:53,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:11:53,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:11:53,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:11:53,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:11:53,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:11:53,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:11:53,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:11:53,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:11:53,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:11:53,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:11:53,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:11:53,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:11:53,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:11:53,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:11:53,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:11:53,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:11:53,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:11:53,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:11:53,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:11:53,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:11:53,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:11:53,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:11:53,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:11:53,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:11:53,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:11:53,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:11:53,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:11:53,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:11:53,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:11:53,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:11:53,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:11:53,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:11:53,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:11:53,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:11:53,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:11:53,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:11:53,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:11:53,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:11:53,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:11:53,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:11:53,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:11:53,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:11:53,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:11:53,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:11:53,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:11:53,678 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:11:53,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:11:53,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:11:53,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:11:53,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:11:53,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:11:53,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:11:53,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:11:53,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:11:53,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:11:53,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:11:53,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:11:53,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:11:53,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:53,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:11:53,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:11:53,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:11:53,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:11:53,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:11:53,684 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:11:53,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:11:53,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:11:53,685 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_829b6212-9854-4837-a6ec-6098ace5241d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75db22900e7229cbb182c0d88ebf0bfd4f203465a743dcb7e2df3ea71652a755 [2022-11-02 21:11:53,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:11:54,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:11:54,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:11:54,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:11:54,019 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:11:54,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2022-11-02 21:11:54,111 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data/8bc1b5253/e577ac0d9c3848d690c2c023413684f0/FLAGc0e0152ec [2022-11-02 21:11:54,637 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:11:54,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2022-11-02 21:11:54,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data/8bc1b5253/e577ac0d9c3848d690c2c023413684f0/FLAGc0e0152ec [2022-11-02 21:11:54,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data/8bc1b5253/e577ac0d9c3848d690c2c023413684f0 [2022-11-02 21:11:54,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:11:54,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:11:54,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:54,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:11:55,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:11:55,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:54" (1/1) ... [2022-11-02 21:11:55,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49293b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55, skipping insertion in model container [2022-11-02 21:11:55,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:54" (1/1) ... [2022-11-02 21:11:55,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:11:55,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:11:55,211 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_829b6212-9854-4837-a6ec-6098ace5241d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1107,1120] [2022-11-02 21:11:55,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:55,267 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:11:55,279 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_829b6212-9854-4837-a6ec-6098ace5241d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1107,1120] [2022-11-02 21:11:55,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:55,324 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:11:55,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55 WrapperNode [2022-11-02 21:11:55,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:55,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:55,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:11:55,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:11:55,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,380 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 215 [2022-11-02 21:11:55,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:55,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:11:55,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:11:55,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:11:55,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,419 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:11:55,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:11:55,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:11:55,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:11:55,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (1/1) ... [2022-11-02 21:11:55,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:55,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:55,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:11:55,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:11:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:11:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:11:55,663 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:11:55,665 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:11:56,192 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:11:56,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:11:56,205 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:11:56,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:56 BoogieIcfgContainer [2022-11-02 21:11:56,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:11:56,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:11:56,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:11:56,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:11:56,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:11:54" (1/3) ... [2022-11-02 21:11:56,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151876e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:56, skipping insertion in model container [2022-11-02 21:11:56,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:55" (2/3) ... [2022-11-02 21:11:56,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151876e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:56, skipping insertion in model container [2022-11-02 21:11:56,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:56" (3/3) ... [2022-11-02 21:11:56,223 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2022-11-02 21:11:56,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:11:56,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:11:56,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:11:56,362 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;@2978639f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:11:56,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:11:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 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 21:11:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:11:56,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:56,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:11:56,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:11:56,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:56,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138133945] [2022-11-02 21:11:56,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:56,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:56,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:11:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:11:56,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:11:56,945 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:11:56,946 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:11:56,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:11:56,953 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:11:56,957 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:11:56,997 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:11:57,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:11:57 BoogieIcfgContainer [2022-11-02 21:11:57,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:11:57,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:11:57,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:11:57,013 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:11:57,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:56" (3/4) ... [2022-11-02 21:11:57,017 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:11:57,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:11:57,019 INFO L158 Benchmark]: Toolchain (without parser) took 2027.92ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 87.6MB in the beginning and 107.3MB in the end (delta: -19.6MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-11-02 21:11:57,020 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:11:57,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.75ms. Allocated memory is still 121.6MB. Free memory was 87.4MB in the beginning and 93.2MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:11:57,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.74ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 90.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:11:57,023 INFO L158 Benchmark]: Boogie Preprocessor took 43.89ms. Allocated memory is still 121.6MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:11:57,029 INFO L158 Benchmark]: RCFGBuilder took 781.80ms. Allocated memory is still 121.6MB. Free memory was 88.1MB in the beginning and 65.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-02 21:11:57,030 INFO L158 Benchmark]: TraceAbstraction took 800.08ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 64.2MB in the beginning and 107.3MB in the end (delta: -43.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:11:57,031 INFO L158 Benchmark]: Witness Printer took 5.09ms. Allocated memory is still 157.3MB. Free memory is still 107.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:11:57,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 90.2MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.75ms. Allocated memory is still 121.6MB. Free memory was 87.4MB in the beginning and 93.2MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.74ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 90.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.89ms. Allocated memory is still 121.6MB. Free memory was 90.2MB in the beginning and 88.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 781.80ms. Allocated memory is still 121.6MB. Free memory was 88.1MB in the beginning and 65.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 800.08ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 64.2MB in the beginning and 107.3MB in the end (delta: -43.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.09ms. Allocated memory is still 157.3MB. Free memory is still 107.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 120, overapproximation of bitwiseOr at line 129, overapproximation of bitwiseAnd at line 114. 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 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_30 mask_SORT_30 = (SORT_30)-1 >> (sizeof(SORT_30) * 8 - 4); [L35] const SORT_30 msb_SORT_30 = (SORT_30)1 << (4 - 1); [L37] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 10); [L38] const SORT_68 msb_SORT_68 = (SORT_68)1 << (10 - 1); [L40] const SORT_1 var_7 = 0; [L41] const SORT_10 var_12 = 1; [L42] const SORT_1 var_22 = 1; [L44] SORT_1 input_2; [L45] SORT_3 input_4; [L46] SORT_1 input_5; [L47] SORT_1 input_6; [L48] SORT_30 input_31; [L49] SORT_1 input_33; [L50] SORT_30 input_35; [L51] SORT_1 input_37; [L52] SORT_1 input_39; [L53] SORT_1 input_41; [L54] SORT_1 input_43; [L55] SORT_1 input_45; [L56] SORT_1 input_47; [L57] SORT_1 input_49; [L58] SORT_3 input_51; [L59] SORT_1 input_54; [L60] SORT_1 input_56; [L61] SORT_1 input_60; [L62] SORT_1 input_62; [L63] SORT_1 input_64; [L64] SORT_1 input_66; [L65] SORT_68 input_69; [L66] SORT_1 input_71; [L67] SORT_1 input_79; [L69] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L70] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 init_9_arg_1 = var_7; [L76] state_8 = init_9_arg_1 [L77] SORT_1 init_16_arg_1 = var_7; [L78] state_15 = init_16_arg_1 [L79] SORT_1 init_27_arg_1 = var_7; [L80] state_26 = init_27_arg_1 [L81] SORT_1 init_29_arg_1 = var_7; [L82] state_28 = init_29_arg_1 [L83] SORT_1 init_59_arg_1 = var_7; [L84] state_58 = init_59_arg_1 VAL [init_16_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_59_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=255, mask_SORT_30=15, mask_SORT_68=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_30=8, msb_SORT_68=512, state_15=0, state_26=0, state_28=0, state_58=0, state_8=0, var_12=1, var_22=1, var_7=0] [L87] input_2 = __VERIFIER_nondet_uchar() [L88] input_4 = __VERIFIER_nondet_uchar() [L89] input_5 = __VERIFIER_nondet_uchar() [L90] input_6 = __VERIFIER_nondet_uchar() [L91] input_31 = __VERIFIER_nondet_uchar() [L92] input_33 = __VERIFIER_nondet_uchar() [L93] input_35 = __VERIFIER_nondet_uchar() [L94] input_37 = __VERIFIER_nondet_uchar() [L95] input_39 = __VERIFIER_nondet_uchar() [L96] input_41 = __VERIFIER_nondet_uchar() [L97] input_43 = __VERIFIER_nondet_uchar() [L98] input_45 = __VERIFIER_nondet_uchar() [L99] input_47 = __VERIFIER_nondet_uchar() [L100] input_49 = __VERIFIER_nondet_uchar() [L101] input_51 = __VERIFIER_nondet_uchar() [L102] input_54 = __VERIFIER_nondet_uchar() [L103] input_56 = __VERIFIER_nondet_uchar() [L104] input_60 = __VERIFIER_nondet_uchar() [L105] input_62 = __VERIFIER_nondet_uchar() [L106] input_64 = __VERIFIER_nondet_uchar() [L107] input_66 = __VERIFIER_nondet_uchar() [L108] input_69 = __VERIFIER_nondet_ushort() [L109] input_71 = __VERIFIER_nondet_uchar() [L110] input_79 = __VERIFIER_nondet_uchar() [L113] SORT_1 var_11_arg_0 = state_8; [L114] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L115] SORT_10 var_11 = var_11_arg_0; [L116] SORT_10 var_13_arg_0 = var_11; [L117] SORT_10 var_13_arg_1 = var_12; [L118] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L119] SORT_1 var_14_arg_0 = var_13; [L120] SORT_1 var_14 = ~var_14_arg_0; [L121] SORT_1 var_17_arg_0 = state_15; [L122] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L123] SORT_10 var_17 = var_17_arg_0; [L124] SORT_10 var_18_arg_0 = var_17; [L125] SORT_10 var_18_arg_1 = var_12; [L126] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L127] SORT_1 var_19_arg_0 = var_14; [L128] SORT_1 var_19_arg_1 = var_18; [L129] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L130] SORT_1 var_23_arg_0 = var_19; [L131] SORT_1 var_23 = ~var_23_arg_0; [L132] SORT_1 var_24_arg_0 = var_22; [L133] SORT_1 var_24_arg_1 = var_23; [L134] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L135] var_24 = var_24 & mask_SORT_1 [L136] SORT_1 bad_25_arg_0 = var_24; [L137] CALL __VERIFIER_assert(!(bad_25_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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 0.2s 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 21:11:57,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/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 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_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/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_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/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_829b6212-9854-4837-a6ec-6098ace5241d/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 75db22900e7229cbb182c0d88ebf0bfd4f203465a743dcb7e2df3ea71652a755 --- 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 21:11:59,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:11:59,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:11:59,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:11:59,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:11:59,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:11:59,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:11:59,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:11:59,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:11:59,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:11:59,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:11:59,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:11:59,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:11:59,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:11:59,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:11:59,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:11:59,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:11:59,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:11:59,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:11:59,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:11:59,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:11:59,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:11:59,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:11:59,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:11:59,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:11:59,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:11:59,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:11:59,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:11:59,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:11:59,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:11:59,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:11:59,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:11:59,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:11:59,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:11:59,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:11:59,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:11:59,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:11:59,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:11:59,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:11:59,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:11:59,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:11:59,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:11:59,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:11:59,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:11:59,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:11:59,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:11:59,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:11:59,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:11:59,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:11:59,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:11:59,547 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:11:59,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:11:59,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:11:59,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:11:59,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:11:59,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:11:59,548 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:11:59,548 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:11:59,548 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:11:59,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:11:59,549 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:11:59,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:11:59,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:11:59,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:11:59,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:11:59,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:59,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:11:59,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:11:59,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:11:59,551 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:11:59,551 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:11:59,551 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:11:59,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:11:59,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:11:59,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:11:59,552 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_829b6212-9854-4837-a6ec-6098ace5241d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75db22900e7229cbb182c0d88ebf0bfd4f203465a743dcb7e2df3ea71652a755 [2022-11-02 21:11:59,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:11:59,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:11:59,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:11:59,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:11:59,932 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:11:59,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2022-11-02 21:12:00,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data/8177bc514/3a27caa11267417a8b3a595b22165518/FLAG0aee12d4d [2022-11-02 21:12:00,683 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:12:00,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2022-11-02 21:12:00,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data/8177bc514/3a27caa11267417a8b3a595b22165518/FLAG0aee12d4d [2022-11-02 21:12:00,985 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/data/8177bc514/3a27caa11267417a8b3a595b22165518 [2022-11-02 21:12:00,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:12:00,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:12:00,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:00,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:12:00,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:12:00,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:00" (1/1) ... [2022-11-02 21:12:01,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c62990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:00, skipping insertion in model container [2022-11-02 21:12:01,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:00" (1/1) ... [2022-11-02 21:12:01,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:12:01,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:12:01,193 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_829b6212-9854-4837-a6ec-6098ace5241d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1107,1120] [2022-11-02 21:12:01,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:01,269 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:12:01,281 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_829b6212-9854-4837-a6ec-6098ace5241d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1107,1120] [2022-11-02 21:12:01,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:01,343 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:12:01,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01 WrapperNode [2022-11-02 21:12:01,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:01,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:01,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:12:01,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:12:01,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,409 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 215 [2022-11-02 21:12:01,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:01,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:12:01,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:12:01,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:12:01,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:12:01,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:12:01,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:12:01,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:12:01,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (1/1) ... [2022-11-02 21:12:01,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:01,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:01,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:01,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:12:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:12:01,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:12:01,633 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:12:01,635 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:12:02,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:12:02,082 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:12:02,083 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:12:02,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:02 BoogieIcfgContainer [2022-11-02 21:12:02,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:12:02,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:12:02,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:12:02,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:12:02,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:00" (1/3) ... [2022-11-02 21:12:02,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59413ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:02, skipping insertion in model container [2022-11-02 21:12:02,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:01" (2/3) ... [2022-11-02 21:12:02,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59413ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:02, skipping insertion in model container [2022-11-02 21:12:02,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:02" (3/3) ... [2022-11-02 21:12:02,121 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2022-11-02 21:12:02,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:12:02,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:12:02,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:12:02,251 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;@399c10aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:12:02,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:12:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 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 21:12:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:12:02,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:02,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:12:02,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:12:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:02,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821716824] [2022-11-02 21:12:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:02,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:02,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:02,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:02,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:12:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:12:02,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:02,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:02,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821716824] [2022-11-02 21:12:02,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821716824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:02,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:02,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:02,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658719775] [2022-11-02 21:12:02,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:02,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:02,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:02,750 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 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) 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 21:12:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:02,827 INFO L93 Difference]: Finished difference Result 62 states and 93 transitions. [2022-11-02 21:12:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:02,830 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 21:12:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:02,838 INFO L225 Difference]: With dead ends: 62 [2022-11-02 21:12:02,838 INFO L226 Difference]: Without dead ends: 39 [2022-11-02 21:12:02,841 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 21:12:02,845 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 45 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:02,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 70 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-02 21:12:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2022-11-02 21:12:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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 21:12:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-11-02 21:12:02,878 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 5 [2022-11-02 21:12:02,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:02,879 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-11-02 21:12:02,879 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 21:12:02,880 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-11-02 21:12:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:12:02,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:02,881 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:02,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:03,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:03,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash -473869687, now seen corresponding path program 1 times [2022-11-02 21:12:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:03,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458470900] [2022-11-02 21:12:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:03,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:03,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:03,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:03,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:12:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:03,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:03,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:03,308 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 21:12:03,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:03,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:03,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458470900] [2022-11-02 21:12:03,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458470900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:03,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:03,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:03,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408233937] [2022-11-02 21:12:03,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:03,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:03,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:03,312 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:03,387 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2022-11-02 21:12:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:03,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 21:12:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:03,391 INFO L225 Difference]: With dead ends: 75 [2022-11-02 21:12:03,392 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:12:03,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 21:12:03,395 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 63 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:03,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 87 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:12:03,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 25. [2022-11-02 21:12:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 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 21:12:03,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-11-02 21:12:03,406 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 22 [2022-11-02 21:12:03,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:03,407 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-11-02 21:12:03,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-11-02 21:12:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:12:03,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:03,408 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:03,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:03,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:03,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:03,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:03,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2062217589, now seen corresponding path program 1 times [2022-11-02 21:12:03,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:03,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044455385] [2022-11-02 21:12:03,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:03,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:03,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:03,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:03,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:12:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:03,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:03,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:03,793 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 21:12:03,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:03,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:03,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044455385] [2022-11-02 21:12:03,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044455385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:03,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:03,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013261034] [2022-11-02 21:12:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:03,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:03,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:03,802 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:03,853 INFO L93 Difference]: Finished difference Result 75 states and 101 transitions. [2022-11-02 21:12:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:03,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 21:12:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:03,855 INFO L225 Difference]: With dead ends: 75 [2022-11-02 21:12:03,856 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:12:03,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 21:12:03,859 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 52 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 92 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 21:12:03,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 92 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:12:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 29. [2022-11-02 21:12:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 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 21:12:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-11-02 21:12:03,873 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 22 [2022-11-02 21:12:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:03,873 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-11-02 21:12:03,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-11-02 21:12:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:12:03,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:03,876 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:03,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:04,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:04,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:04,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1645943693, now seen corresponding path program 1 times [2022-11-02 21:12:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:04,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491643983] [2022-11-02 21:12:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:04,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:04,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:04,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:04,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:12:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:04,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:04,286 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 21:12:04,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:04,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:04,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491643983] [2022-11-02 21:12:04,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491643983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:04,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:04,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:04,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673814316] [2022-11-02 21:12:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:04,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:04,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:04,296 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:04,338 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2022-11-02 21:12:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:04,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 21:12:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:04,342 INFO L225 Difference]: With dead ends: 75 [2022-11-02 21:12:04,343 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:12:04,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 21:12:04,347 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 46 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 91 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 21:12:04,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 91 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:04,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:12:04,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 31. [2022-11-02 21:12:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 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 21:12:04,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-11-02 21:12:04,360 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 22 [2022-11-02 21:12:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:04,361 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-11-02 21:12:04,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-11-02 21:12:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:12:04,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:04,362 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:04,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:04,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1947959025, now seen corresponding path program 1 times [2022-11-02 21:12:04,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:04,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358339276] [2022-11-02 21:12:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:04,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:04,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:04,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:04,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:12:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:04,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:04,742 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 21:12:04,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:04,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358339276] [2022-11-02 21:12:04,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358339276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:04,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:04,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408134728] [2022-11-02 21:12:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:04,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:04,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:04,745 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:04,775 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2022-11-02 21:12:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 21:12:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:04,776 INFO L225 Difference]: With dead ends: 75 [2022-11-02 21:12:04,777 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:12:04,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 21:12:04,778 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:04,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 84 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:12:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 35. [2022-11-02 21:12:04,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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 21:12:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-11-02 21:12:04,784 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 22 [2022-11-02 21:12:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:04,784 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-11-02 21:12:04,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-11-02 21:12:04,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:12:04,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:04,786 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:04,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:04,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:04,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:04,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash -172951663, now seen corresponding path program 1 times [2022-11-02 21:12:04,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:04,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384604992] [2022-11-02 21:12:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:04,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:04,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:04,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:04,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:12:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:05,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:05,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:05,165 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 21:12:05,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:05,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:05,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384604992] [2022-11-02 21:12:05,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384604992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:05,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:05,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:05,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204242804] [2022-11-02 21:12:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:05,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:05,168 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:05,193 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2022-11-02 21:12:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 21:12:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:05,194 INFO L225 Difference]: With dead ends: 75 [2022-11-02 21:12:05,194 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:12:05,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 21:12:05,196 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 29 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 89 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 21:12:05,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 89 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:05,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:12:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2022-11-02 21:12:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 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 21:12:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-11-02 21:12:05,201 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 22 [2022-11-02 21:12:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:05,201 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-11-02 21:12:05,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-11-02 21:12:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:12:05,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:05,203 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:05,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:05,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:05,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash -171104621, now seen corresponding path program 1 times [2022-11-02 21:12:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:05,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872539404] [2022-11-02 21:12:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:05,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:05,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:05,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:05,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:12:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:05,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:12:05,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:05,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:06,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:06,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872539404] [2022-11-02 21:12:06,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872539404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:06,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:06,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 21:12:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135433181] [2022-11-02 21:12:06,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:06,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:12:06,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:06,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:12:06,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:12:06,192 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:06,459 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2022-11-02 21:12:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:12:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 21:12:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:06,460 INFO L225 Difference]: With dead ends: 75 [2022-11-02 21:12:06,460 INFO L226 Difference]: Without dead ends: 73 [2022-11-02 21:12:06,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:12:06,461 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 149 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:06,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 225 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2022-11-02 21:12:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-02 21:12:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2022-11-02 21:12:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.320754716981132) internal successors, (70), 53 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2022-11-02 21:12:06,468 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 22 [2022-11-02 21:12:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:06,469 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2022-11-02 21:12:06,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2022-11-02 21:12:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 21:12:06,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:06,470 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:06,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:06,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:06,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1023366721, now seen corresponding path program 1 times [2022-11-02 21:12:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:06,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808935390] [2022-11-02 21:12:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:06,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:06,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:06,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:12:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:12:06,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:07,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:07,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808935390] [2022-11-02 21:12:07,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808935390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:07,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:07,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 21:12:07,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167336625] [2022-11-02 21:12:07,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:07,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:12:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:07,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:12:07,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:12:07,246 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 21:12:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:08,636 INFO L93 Difference]: Finished difference Result 304 states and 405 transitions. [2022-11-02 21:12:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 21:12:08,637 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 39 [2022-11-02 21:12:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:08,640 INFO L225 Difference]: With dead ends: 304 [2022-11-02 21:12:08,640 INFO L226 Difference]: Without dead ends: 285 [2022-11-02 21:12:08,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=724, Invalid=2468, Unknown=0, NotChecked=0, Total=3192 [2022-11-02 21:12:08,643 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 376 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:08,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 524 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:08,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-02 21:12:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 80. [2022-11-02 21:12:08,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 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 21:12:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2022-11-02 21:12:08,671 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 39 [2022-11-02 21:12:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:08,673 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2022-11-02 21:12:08,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 21:12:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2022-11-02 21:12:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 21:12:08,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:08,680 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:08,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:08,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:08,893 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:08,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash -961327107, now seen corresponding path program 1 times [2022-11-02 21:12:08,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:08,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4041687] [2022-11-02 21:12:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:08,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:08,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:08,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:08,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:12:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:12:09,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:12:09,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:09,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:09,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4041687] [2022-11-02 21:12:09,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4041687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:09,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:09,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:12:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904526424] [2022-11-02 21:12:09,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:09,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:12:09,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:12:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:09,125 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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 21:12:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:09,188 INFO L93 Difference]: Finished difference Result 151 states and 198 transitions. [2022-11-02 21:12:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:09,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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) Word has length 39 [2022-11-02 21:12:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:09,190 INFO L225 Difference]: With dead ends: 151 [2022-11-02 21:12:09,191 INFO L226 Difference]: Without dead ends: 89 [2022-11-02 21:12:09,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:09,193 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:09,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 96 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:12:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-02 21:12:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2022-11-02 21:12:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 75 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2022-11-02 21:12:09,203 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 39 [2022-11-02 21:12:09,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:09,203 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2022-11-02 21:12:09,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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 21:12:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2022-11-02 21:12:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:12:09,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:09,205 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:09,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:09,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:09,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:09,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1942623151, now seen corresponding path program 2 times [2022-11-02 21:12:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:09,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848257013] [2022-11-02 21:12:09,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:12:09,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:09,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:09,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:12:09,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:12:09,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:09,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:12:09,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:12:09,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:12:09,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848257013] [2022-11-02 21:12:09,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848257013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:09,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:09,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 21:12:09,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104575573] [2022-11-02 21:12:09,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:09,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:12:09,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:09,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:12:09,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:12:09,883 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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 21:12:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:10,072 INFO L93 Difference]: Finished difference Result 278 states and 369 transitions. [2022-11-02 21:12:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:10,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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 56 [2022-11-02 21:12:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:10,074 INFO L225 Difference]: With dead ends: 278 [2022-11-02 21:12:10,074 INFO L226 Difference]: Without dead ends: 220 [2022-11-02 21:12:10,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:12:10,076 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 157 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:10,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 247 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-02 21:12:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 128. [2022-11-02 21:12:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.3228346456692914) internal successors, (168), 127 states have internal predecessors, (168), 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 21:12:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2022-11-02 21:12:10,090 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 56 [2022-11-02 21:12:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:10,091 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2022-11-02 21:12:10,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 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 21:12:10,091 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2022-11-02 21:12:10,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:12:10,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:10,092 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:10,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:10,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:10,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:10,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:10,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1842871055, now seen corresponding path program 3 times [2022-11-02 21:12:10,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:10,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108091763] [2022-11-02 21:12:10,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:12:10,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:10,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:10,309 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:10,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:12:10,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:12:10,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:10,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:12:10,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:12:10,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:10,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108091763] [2022-11-02 21:12:10,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108091763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:10,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:10,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:12:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411461915] [2022-11-02 21:12:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:10,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:12:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:12:10,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:10,466 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:10,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:10,578 INFO L93 Difference]: Finished difference Result 340 states and 452 transitions. [2022-11-02 21:12:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:10,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-02 21:12:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:10,583 INFO L225 Difference]: With dead ends: 340 [2022-11-02 21:12:10,583 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 21:12:10,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:10,585 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:10,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 114 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 21:12:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 132. [2022-11-02 21:12:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 131 states have internal predecessors, (172), 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 21:12:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 172 transitions. [2022-11-02 21:12:10,623 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 172 transitions. Word has length 56 [2022-11-02 21:12:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:10,623 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 172 transitions. [2022-11-02 21:12:10,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 172 transitions. [2022-11-02 21:12:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:12:10,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:10,630 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:10,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:10,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:10,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:10,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1172232563, now seen corresponding path program 1 times [2022-11-02 21:12:10,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:10,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430936605] [2022-11-02 21:12:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:10,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:10,854 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:10,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:12:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:11,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:12:11,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:12:11,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:12:11,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:11,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430936605] [2022-11-02 21:12:11,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430936605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:11,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:11,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 21:12:11,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220878262] [2022-11-02 21:12:11,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:11,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:12:11,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:11,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:12:11,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:12:11,511 INFO L87 Difference]: Start difference. First operand 132 states and 172 transitions. Second operand has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 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 21:12:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:12,663 INFO L93 Difference]: Finished difference Result 566 states and 752 transitions. [2022-11-02 21:12:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:12:12,664 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 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 56 [2022-11-02 21:12:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:12,667 INFO L225 Difference]: With dead ends: 566 [2022-11-02 21:12:12,667 INFO L226 Difference]: Without dead ends: 452 [2022-11-02 21:12:12,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 21:12:12,669 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 533 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:12,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 408 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:12:12,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-02 21:12:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 184. [2022-11-02 21:12:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.3114754098360655) internal successors, (240), 183 states have internal predecessors, (240), 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 21:12:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 240 transitions. [2022-11-02 21:12:12,687 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 240 transitions. Word has length 56 [2022-11-02 21:12:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:12,688 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 240 transitions. [2022-11-02 21:12:12,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 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 21:12:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 240 transitions. [2022-11-02 21:12:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 21:12:12,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:12,690 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:12,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:12,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:12,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1244206455, now seen corresponding path program 1 times [2022-11-02 21:12:12,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:12,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156013778] [2022-11-02 21:12:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:12,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:12,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:12,907 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:12,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:12:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:13,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 21:12:13,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:12:13,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:12:13,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:13,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156013778] [2022-11-02 21:12:13,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156013778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:13,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:13,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 21:12:13,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132611150] [2022-11-02 21:12:13,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:13,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:12:13,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:12:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:12:13,736 INFO L87 Difference]: Start difference. First operand 184 states and 240 transitions. Second operand has 24 states, 24 states have (on average 3.375) internal successors, (81), 24 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:15,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:15,298 INFO L93 Difference]: Finished difference Result 479 states and 625 transitions. [2022-11-02 21:12:15,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 21:12:15,299 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.375) internal successors, (81), 24 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-02 21:12:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:15,300 INFO L225 Difference]: With dead ends: 479 [2022-11-02 21:12:15,300 INFO L226 Difference]: Without dead ends: 313 [2022-11-02 21:12:15,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=747, Invalid=2559, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 21:12:15,302 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 657 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:15,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 491 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:12:15,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-02 21:12:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 123. [2022-11-02 21:12:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2622950819672132) internal successors, (154), 122 states have internal predecessors, (154), 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 21:12:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 154 transitions. [2022-11-02 21:12:15,317 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 154 transitions. Word has length 56 [2022-11-02 21:12:15,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:15,319 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 154 transitions. [2022-11-02 21:12:15,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.375) internal successors, (81), 24 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:15,319 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 154 transitions. [2022-11-02 21:12:15,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:12:15,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:15,320 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:15,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:15,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:15,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:15,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash -34732993, now seen corresponding path program 2 times [2022-11-02 21:12:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:15,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495095187] [2022-11-02 21:12:15,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:12:15,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:15,538 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:15,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:12:15,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:12:15,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:15,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:12:15,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 66 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:12:15,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 66 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:12:16,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:16,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495095187] [2022-11-02 21:12:16,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495095187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:16,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:16,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:12:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358864348] [2022-11-02 21:12:16,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:12:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:12:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:16,115 INFO L87 Difference]: Start difference. First operand 123 states and 154 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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 21:12:16,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:16,352 INFO L93 Difference]: Finished difference Result 394 states and 502 transitions. [2022-11-02 21:12:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:12:16,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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 73 [2022-11-02 21:12:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:16,355 INFO L225 Difference]: With dead ends: 394 [2022-11-02 21:12:16,355 INFO L226 Difference]: Without dead ends: 289 [2022-11-02 21:12:16,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:12:16,356 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 199 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:16,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 230 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:16,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-02 21:12:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 226. [2022-11-02 21:12:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.2577777777777779) internal successors, (283), 225 states have internal predecessors, (283), 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 21:12:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 283 transitions. [2022-11-02 21:12:16,376 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 283 transitions. Word has length 73 [2022-11-02 21:12:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:16,376 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 283 transitions. [2022-11-02 21:12:16,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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 21:12:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 283 transitions. [2022-11-02 21:12:16,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:12:16,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:16,377 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:16,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:16,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:16,583 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:16,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:16,583 INFO L85 PathProgramCache]: Analyzing trace with hash -12100739, now seen corresponding path program 3 times [2022-11-02 21:12:16,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:16,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789331289] [2022-11-02 21:12:16,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:12:16,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:16,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:16,587 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:16,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:12:16,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:12:16,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:16,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:12:16,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 21:12:16,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 21:12:17,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:17,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789331289] [2022-11-02 21:12:17,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789331289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:17,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:17,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 21:12:17,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544503344] [2022-11-02 21:12:17,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:12:17,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:12:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:12:17,124 INFO L87 Difference]: Start difference. First operand 226 states and 283 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:17,413 INFO L93 Difference]: Finished difference Result 506 states and 649 transitions. [2022-11-02 21:12:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:12:17,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-02 21:12:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:17,416 INFO L225 Difference]: With dead ends: 506 [2022-11-02 21:12:17,416 INFO L226 Difference]: Without dead ends: 332 [2022-11-02 21:12:17,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:17,420 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 90 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:17,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 128 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:17,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-02 21:12:17,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 218. [2022-11-02 21:12:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.2488479262672811) internal successors, (271), 217 states have internal predecessors, (271), 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 21:12:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 271 transitions. [2022-11-02 21:12:17,440 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 271 transitions. Word has length 73 [2022-11-02 21:12:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:17,440 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 271 transitions. [2022-11-02 21:12:17,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 271 transitions. [2022-11-02 21:12:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:12:17,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:17,442 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:17,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-02 21:12:17,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:17,654 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:17,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:17,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1762906623, now seen corresponding path program 1 times [2022-11-02 21:12:17,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:17,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510290558] [2022-11-02 21:12:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:17,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:17,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:17,657 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:17,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:12:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:12:17,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 64 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:12:18,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 82 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:12:18,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:18,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510290558] [2022-11-02 21:12:18,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510290558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:18,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:18,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 21:12:18,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313927926] [2022-11-02 21:12:18,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:18,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:12:18,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:12:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:12:18,245 INFO L87 Difference]: Start difference. First operand 218 states and 271 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 21:12:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:18,345 INFO L93 Difference]: Finished difference Result 252 states and 312 transitions. [2022-11-02 21:12:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:12:18,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 73 [2022-11-02 21:12:18,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:18,351 INFO L225 Difference]: With dead ends: 252 [2022-11-02 21:12:18,351 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 21:12:18,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:12:18,352 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 80 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:18,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 103 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:12:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 21:12:18,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 21:12:18,353 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 21:12:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 21:12:18,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2022-11-02 21:12:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:18,353 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:12:18,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 21:12:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:12:18,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 21:12:18,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:12:18,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:18,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:18,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 21:12:18,919 INFO L899 garLoopResultBuilder]: For program point L147(line 147) no Hoare annotation was computed. [2022-11-02 21:12:18,919 INFO L895 garLoopResultBuilder]: At program point L85-2(lines 85 184) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= |ULTIMATE.start_main_~var_12~0#1| (_ bv1 32))) (.cse2 (= |ULTIMATE.start_main_~state_8~0#1| (_ bv0 8))) (.cse3 (= (_ bv0 8) |ULTIMATE.start_main_~state_58~0#1|))) (or (and (= |ULTIMATE.start_main_~var_85_arg_1~0#1| (_ bv0 8)) .cse0 (= ((_ zero_extend 24) |ULTIMATE.start_main_~var_83_arg_0~0#1|) (_ bv0 32)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= |ULTIMATE.start_main_~var_83_arg_2~0#1| (_ bv0 8)) .cse1 (= |ULTIMATE.start_main_~var_85_arg_2~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_77_arg_0~0#1| (_ bv0 8)) .cse2 (= |ULTIMATE.start_main_~var_80_arg_2~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_80_arg_0~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_73_arg_0~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_7~0#1| (_ bv0 8)) (= (_ bv0 8) |ULTIMATE.start_main_~next_74_arg_1~0#1|) .cse3 (= (_ bv0 8) |ULTIMATE.start_main_~state_28~0#1|) (= |ULTIMATE.start_main_~next_84_arg_1~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_77_arg_1~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_82_arg_1~0#1| (_ bv0 8)) (not (= |ULTIMATE.start_main_~var_82_arg_0~0#1| (_ bv0 8))) (= |ULTIMATE.start_main_~var_73_arg_2~0#1| (_ bv0 8))) (and .cse0 .cse1 (= (_ bv0 8) |ULTIMATE.start_main_~state_26~0#1|) .cse2 (= |ULTIMATE.start_main_~var_7~0#1| |ULTIMATE.start_main_~state_28~0#1|) .cse3 (= ((_ zero_extend 24) |ULTIMATE.start_main_~state_28~0#1|) (_ bv0 32))))) [2022-11-02 21:12:18,919 INFO L899 garLoopResultBuilder]: For program point L85-3(lines 85 184) no Hoare annotation was computed. [2022-11-02 21:12:18,919 INFO L899 garLoopResultBuilder]: For program point L147-2(line 147) no Hoare annotation was computed. [2022-11-02 21:12:18,919 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 21:12:18,919 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 21:12:18,919 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 21:12:18,920 INFO L895 garLoopResultBuilder]: At program point L185(lines 22 186) the Hoare annotation is: false [2022-11-02 21:12:18,920 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-02 21:12:18,920 INFO L899 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2022-11-02 21:12:18,920 INFO L899 garLoopResultBuilder]: For program point L152-2(line 152) no Hoare annotation was computed. [2022-11-02 21:12:18,920 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-02 21:12:18,920 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-02 21:12:18,920 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-02 21:12:18,920 INFO L899 garLoopResultBuilder]: For program point L169(line 169) no Hoare annotation was computed. [2022-11-02 21:12:18,920 INFO L899 garLoopResultBuilder]: For program point L169-2(line 169) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point L165(line 165) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point L165-2(line 165) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point L161-2(line 161) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point L175(line 175) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point L142(line 142) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point L175-2(line 175) no Hoare annotation was computed. [2022-11-02 21:12:18,921 INFO L899 garLoopResultBuilder]: For program point L142-2(line 142) no Hoare annotation was computed. [2022-11-02 21:12:18,924 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:18,926 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:12:18,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:12:18 BoogieIcfgContainer [2022-11-02 21:12:18,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:12:18,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:12:18,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:12:18,955 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:12:18,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:02" (3/4) ... [2022-11-02 21:12:18,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:12:18,974 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-02 21:12:18,974 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-02 21:12:18,975 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:12:19,013 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 21:12:19,018 INFO L158 Benchmark]: Toolchain (without parser) took 18028.15ms. Allocated memory was 65.0MB in the beginning and 98.6MB in the end (delta: 33.6MB). Free memory was 43.5MB in the beginning and 55.5MB in the end (delta: -12.0MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-11-02 21:12:19,019 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 65.0MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:19,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.09ms. Allocated memory is still 65.0MB. Free memory was 43.3MB in the beginning and 30.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:12:19,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.60ms. Allocated memory is still 65.0MB. Free memory was 30.7MB in the beginning and 46.0MB in the end (delta: -15.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-11-02 21:12:19,020 INFO L158 Benchmark]: Boogie Preprocessor took 29.94ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 44.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:19,021 INFO L158 Benchmark]: RCFGBuilder took 650.45ms. Allocated memory is still 65.0MB. Free memory was 44.1MB in the beginning and 27.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 21:12:19,021 INFO L158 Benchmark]: TraceAbstraction took 16839.68ms. Allocated memory was 65.0MB in the beginning and 98.6MB in the end (delta: 33.6MB). Free memory was 45.7MB in the beginning and 58.7MB in the end (delta: -13.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-02 21:12:19,022 INFO L158 Benchmark]: Witness Printer took 62.89ms. Allocated memory is still 98.6MB. Free memory was 58.7MB in the beginning and 55.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:12:19,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 65.0MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.09ms. Allocated memory is still 65.0MB. Free memory was 43.3MB in the beginning and 30.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.60ms. Allocated memory is still 65.0MB. Free memory was 30.7MB in the beginning and 46.0MB in the end (delta: -15.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.94ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 44.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 650.45ms. Allocated memory is still 65.0MB. Free memory was 44.1MB in the beginning and 27.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16839.68ms. Allocated memory was 65.0MB in the beginning and 98.6MB in the end (delta: 33.6MB). Free memory was 45.7MB in the beginning and 58.7MB in the end (delta: -13.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Witness Printer took 62.89ms. Allocated memory is still 98.6MB. Free memory was 58.7MB in the beginning and 55.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.7s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2618 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2618 mSDsluCounter, 3079 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 60 IncrementalHoareTripleChecker+Unchecked, 2506 mSDsCounter, 325 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1493 IncrementalHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 325 mSolverCounterUnsat, 573 mSDtfsCounter, 1493 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1232 GetRequests, 962 SyntacticMatches, 4 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=14, InterpolantAutomatonStates: 205, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 1255 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 91 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 2433 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 658 NumberOfCodeBlocks, 573 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1082 ConstructedInterpolants, 18 QuantifiedInterpolants, 4808 SizeOfPredicates, 138 NumberOfNonLiveVariables, 4187 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 957/1136 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: 85]: Loop Invariant Derived loop invariant: ((((((((((((((((((((var_85_arg_1 == 0bv8 && 1bv8 == mask_SORT_1) && ~zero_extendFrom16To32(var_83_arg_0) == 0bv32) && cond == 1bv32) && var_83_arg_2 == 0bv8) && var_12 == 1bv32) && var_85_arg_2 == 0bv8) && var_77_arg_0 == 0bv8) && state_8 == 0bv8) && var_80_arg_2 == 0bv8) && var_80_arg_0 == 0bv8) && var_73_arg_0 == 0bv8) && var_7 == 0bv8) && 0bv8 == next_74_arg_1) && 0bv8 == state_58) && 0bv8 == state_28) && next_84_arg_1 == 0bv8) && var_77_arg_1 == 0bv8) && var_82_arg_1 == 0bv8) && !(var_82_arg_0 == 0bv8)) && var_73_arg_2 == 0bv8) || ((((((1bv8 == mask_SORT_1 && var_12 == 1bv32) && 0bv8 == state_26) && state_8 == 0bv8) && var_7 == state_28) && 0bv8 == state_58) && ~zero_extendFrom16To32(state_28) == 0bv32) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 * 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 21:12:19,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829b6212-9854-4837-a6ec-6098ace5241d/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