./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.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_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b6b79cb1fa4accf5125a3420115b0b09b98cba7b1efdd830c177a3c1ffb8598 --- 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 [2022-11-03 04:05:21,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:05:21,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:05:21,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:05:21,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:05:21,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:05:21,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:05:21,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:05:21,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:05:21,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:05:21,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:05:21,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:05:21,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:05:21,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:05:21,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:05:21,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:05:21,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:05:21,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:05:21,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:05:21,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:05:21,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:05:21,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:05:21,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:05:21,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:05:21,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:05:21,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:05:21,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:05:21,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:05:21,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:05:21,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:05:21,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:05:21,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:05:21,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:05:21,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:05:21,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:05:21,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:05:21,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:05:21,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:05:21,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:05:21,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:05:21,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:05:21,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:05:21,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:05:21,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:05:21,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:05:21,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:05:21,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:05:21,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:05:21,189 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:05:21,189 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:05:21,189 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:05:21,190 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:05:21,191 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:05:21,191 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:05:21,191 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:05:21,191 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:05:21,192 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:05:21,192 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:05:21,192 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:05:21,192 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:05:21,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:05:21,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:05:21,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:05:21,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:05:21,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:05:21,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:05:21,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:05:21,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:05:21,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:05:21,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:05:21,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:05:21,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:21,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:05:21,196 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:05:21,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:05:21,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:05:21,197 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:05:21,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:05:21,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:05:21,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:05:21,198 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_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b6b79cb1fa4accf5125a3420115b0b09b98cba7b1efdd830c177a3c1ffb8598 [2022-11-03 04:05:21,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:05:21,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:05:21,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:05:21,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:05:21,526 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:05:21,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c [2022-11-03 04:05:21,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data/bc4afe7eb/7e2fcadd95774a3aa3bf93509db00a79/FLAG3833a887c [2022-11-03 04:05:22,212 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:05:22,213 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c [2022-11-03 04:05:22,230 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data/bc4afe7eb/7e2fcadd95774a3aa3bf93509db00a79/FLAG3833a887c [2022-11-03 04:05:22,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data/bc4afe7eb/7e2fcadd95774a3aa3bf93509db00a79 [2022-11-03 04:05:22,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:05:22,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:05:22,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:22,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:05:22,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:05:22,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:22" (1/1) ... [2022-11-03 04:05:22,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c532bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:22, skipping insertion in model container [2022-11-03 04:05:22,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:22" (1/1) ... [2022-11-03 04:05:22,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:05:22,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:05:22,766 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_3caa43e3-9300-45da-9436-f6078f193d29/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c[1107,1120] [2022-11-03 04:05:22,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:05:22,878 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:05:22,903 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_3caa43e3-9300-45da-9436-f6078f193d29/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c[1107,1120] [2022-11-03 04:05:23,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:05:23,038 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:05:23,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23 WrapperNode [2022-11-03 04:05:23,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:23,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:05:23,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:05:23,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:05:23,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,125 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 500 [2022-11-03 04:05:23,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:05:23,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:05:23,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:05:23,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:05:23,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,164 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:05:23,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:05:23,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:05:23,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:05:23,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (1/1) ... [2022-11-03 04:05:23,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:23,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:23,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:05:23,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:05:23,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:05:23,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:05:23,458 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:05:23,460 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:05:24,172 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:05:24,566 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:05:24,566 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:05:24,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:24 BoogieIcfgContainer [2022-11-03 04:05:24,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:05:24,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:05:24,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:05:24,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:05:24,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:05:22" (1/3) ... [2022-11-03 04:05:24,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40554196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:24, skipping insertion in model container [2022-11-03 04:05:24,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:23" (2/3) ... [2022-11-03 04:05:24,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40554196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:24, skipping insertion in model container [2022-11-03 04:05:24,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:24" (3/3) ... [2022-11-03 04:05:24,579 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.zaher.c [2022-11-03 04:05:24,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:05:24,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:05:24,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:05:24,658 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=FINITE_AUTOMATA, 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;@52eb110d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:05:24,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:05:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-03 04:05:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:05:24,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:24,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:05:24,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 7427987, now seen corresponding path program 1 times [2022-11-03 04:05:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:24,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014767946] [2022-11-03 04:05:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:24,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:05:25,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:05:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:05:25,446 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:05:25,450 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:05:25,452 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:05:25,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:05:25,460 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 04:05:25,465 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:05:25,506 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 04:05:25,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:05:25 BoogieIcfgContainer [2022-11-03 04:05:25,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:05:25,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:05:25,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:05:25,525 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:05:25,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:24" (3/4) ... [2022-11-03 04:05:25,529 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:05:25,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:05:25,533 INFO L158 Benchmark]: Toolchain (without parser) took 3010.92ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 74.5MB in the beginning and 75.0MB in the end (delta: -474.0kB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2022-11-03 04:05:25,533 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:05:25,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.00ms. Allocated memory is still 111.1MB. Free memory was 74.3MB in the beginning and 75.1MB in the end (delta: -763.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:05:25,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.27ms. Allocated memory is still 111.1MB. Free memory was 75.1MB in the beginning and 68.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 04:05:25,537 INFO L158 Benchmark]: Boogie Preprocessor took 47.68ms. Allocated memory is still 111.1MB. Free memory was 68.7MB in the beginning and 64.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:05:25,542 INFO L158 Benchmark]: RCFGBuilder took 1393.58ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 64.9MB in the beginning and 59.7MB in the end (delta: 5.2MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2022-11-03 04:05:25,543 INFO L158 Benchmark]: TraceAbstraction took 950.70ms. Allocated memory is still 140.5MB. Free memory was 58.7MB in the beginning and 75.0MB in the end (delta: -16.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:05:25,545 INFO L158 Benchmark]: Witness Printer took 6.54ms. Allocated memory is still 140.5MB. Free memory was 75.0MB in the beginning and 75.0MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:05:25,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.00ms. Allocated memory is still 111.1MB. Free memory was 74.3MB in the beginning and 75.1MB in the end (delta: -763.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.27ms. Allocated memory is still 111.1MB. Free memory was 75.1MB in the beginning and 68.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.68ms. Allocated memory is still 111.1MB. Free memory was 68.7MB in the beginning and 64.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1393.58ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 64.9MB in the beginning and 59.7MB in the end (delta: 5.2MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. * TraceAbstraction took 950.70ms. Allocated memory is still 140.5MB. Free memory was 58.7MB in the beginning and 75.0MB in the end (delta: -16.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.54ms. Allocated memory is still 140.5MB. Free memory was 75.0MB in the beginning and 75.0MB in the end (delta: 2.7kB). 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 123, overapproximation of bitwiseAnd at line 107. 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 - 32); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (32 - 1); [L31] const SORT_43 mask_SORT_43 = (SORT_43)-1 >> (sizeof(SORT_43) * 8 - 3); [L32] const SORT_43 msb_SORT_43 = (SORT_43)1 << (3 - 1); [L34] const SORT_97 mask_SORT_97 = (SORT_97)-1 >> (sizeof(SORT_97) * 8 - 6); [L35] const SORT_97 msb_SORT_97 = (SORT_97)1 << (6 - 1); [L37] const SORT_135 mask_SORT_135 = (SORT_135)-1 >> (sizeof(SORT_135) * 8 - 2); [L38] const SORT_135 msb_SORT_135 = (SORT_135)1 << (2 - 1); [L40] const SORT_1 var_5 = 0; [L41] const SORT_1 var_13 = 1; [L42] const SORT_43 var_75 = 0; [L43] const SORT_3 var_94 = 0; [L44] const SORT_97 var_99 = 0; [L45] const SORT_43 var_113 = 2; [L46] const SORT_43 var_114 = 1; [L47] const SORT_97 var_115 = 4; [L48] const SORT_97 var_118 = 2; [L49] const SORT_97 var_122 = 8; [L50] const SORT_43 var_125 = 4; [L51] const SORT_97 var_126 = 43; [L52] const SORT_97 var_129 = 35; [L53] const SORT_97 var_133 = 5; [L55] SORT_1 input_2; [L56] SORT_3 input_4; [L57] SORT_1 input_55; [L58] SORT_1 input_80; [L59] SORT_43 input_88; [L60] SORT_43 input_89; [L61] SORT_43 input_90; [L62] SORT_43 input_91; [L63] SORT_43 input_92; [L64] SORT_43 input_93; [L65] SORT_43 input_103; [L66] SORT_43 input_109; [L67] SORT_43 input_141; [L68] SORT_43 input_144; [L70] SORT_1 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_43 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_43; [L79] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_43 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_43; [L81] SORT_3 state_47 = __VERIFIER_nondet_uint() & mask_SORT_3; [L82] SORT_43 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_43; [L83] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 init_7_arg_1 = var_5; [L86] state_6 = init_7_arg_1 [L87] SORT_1 init_10_arg_1 = var_5; [L88] state_9 = init_10_arg_1 [L89] SORT_1 init_15_arg_1 = var_13; [L90] state_14 = init_15_arg_1 [L91] SORT_1 init_19_arg_1 = var_5; [L92] state_18 = init_19_arg_1 [L93] SORT_1 init_23_arg_1 = var_5; [L94] state_22 = init_23_arg_1 [L95] SORT_1 init_26_arg_1 = var_5; [L96] state_25 = init_26_arg_1 [L97] SORT_1 init_30_arg_1 = var_5; [L98] state_29 = init_30_arg_1 [L99] SORT_1 init_34_arg_1 = var_5; [L100] state_33 = init_34_arg_1 [L101] SORT_1 init_53_arg_1 = var_5; [L102] state_52 = init_53_arg_1 VAL [init_10_arg_1=0, init_15_arg_1=1, init_19_arg_1=0, init_23_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_34_arg_1=0, init_53_arg_1=0, init_7_arg_1=0, mask_SORT_1=1, mask_SORT_135=3, mask_SORT_3=4294967295, mask_SORT_43=7, mask_SORT_97=63, msb_SORT_1=1, msb_SORT_135=2, msb_SORT_3=2147483648, msb_SORT_43=4, msb_SORT_97=32, state_14=1, state_18=0, state_22=0, state_25=0, state_29=0, state_33=0, state_44=0, state_45=0, state_46=0, state_47=4294967295, state_51=1, state_52=0, state_6=0, state_9=0, var_113=2, var_114=1, var_115=4, var_118=2, var_122=8, var_125=4, var_126=43, var_129=35, var_13=1, var_133=5, var_5=0, var_75=0, var_94=0, var_99=0] [L105] input_2 = __VERIFIER_nondet_uchar() [L106] input_4 = __VERIFIER_nondet_uint() [L107] input_4 = input_4 & mask_SORT_3 [L108] input_55 = __VERIFIER_nondet_uchar() [L109] input_80 = __VERIFIER_nondet_uchar() [L110] input_88 = __VERIFIER_nondet_uchar() [L111] input_89 = __VERIFIER_nondet_uchar() [L112] input_90 = __VERIFIER_nondet_uchar() [L113] input_91 = __VERIFIER_nondet_uchar() [L114] input_92 = __VERIFIER_nondet_uchar() [L115] input_93 = __VERIFIER_nondet_uchar() [L116] input_103 = __VERIFIER_nondet_uchar() [L117] input_109 = __VERIFIER_nondet_uchar() [L118] input_141 = __VERIFIER_nondet_uchar() [L119] input_144 = __VERIFIER_nondet_uchar() [L122] SORT_1 var_8_arg_0 = state_6; [L123] SORT_1 var_8 = ~var_8_arg_0; [L124] SORT_1 var_11_arg_0 = state_9; [L125] SORT_1 var_11 = ~var_11_arg_0; [L126] SORT_1 var_12_arg_0 = var_8; [L127] SORT_1 var_12_arg_1 = var_11; [L128] SORT_1 var_12 = var_12_arg_0 & var_12_arg_1; [L129] SORT_1 var_16_arg_0 = state_14; [L130] SORT_1 var_16 = ~var_16_arg_0; [L131] SORT_1 var_17_arg_0 = var_12; [L132] SORT_1 var_17_arg_1 = var_16; [L133] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L134] SORT_1 var_20_arg_0 = state_18; [L135] SORT_1 var_20 = ~var_20_arg_0; [L136] SORT_1 var_21_arg_0 = var_17; [L137] SORT_1 var_21_arg_1 = var_20; [L138] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L139] SORT_1 var_24_arg_0 = var_21; [L140] SORT_1 var_24_arg_1 = state_22; [L141] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L142] SORT_1 var_27_arg_0 = state_25; [L143] SORT_1 var_27 = ~var_27_arg_0; [L144] SORT_1 var_28_arg_0 = var_24; [L145] SORT_1 var_28_arg_1 = var_27; [L146] SORT_1 var_28 = var_28_arg_0 & var_28_arg_1; [L147] SORT_1 var_31_arg_0 = state_29; [L148] SORT_1 var_31 = ~var_31_arg_0; [L149] SORT_1 var_32_arg_0 = var_28; [L150] SORT_1 var_32_arg_1 = var_31; [L151] SORT_1 var_32 = var_32_arg_0 & var_32_arg_1; [L152] SORT_1 var_35_arg_0 = state_33; [L153] SORT_1 var_35 = ~var_35_arg_0; [L154] SORT_1 var_36_arg_0 = var_32; [L155] SORT_1 var_36_arg_1 = var_35; [L156] SORT_1 var_36 = var_36_arg_0 & var_36_arg_1; [L157] SORT_1 var_37_arg_0 = var_36; [L158] SORT_1 var_37 = ~var_37_arg_0; [L159] SORT_1 var_40_arg_0 = var_37; [L160] SORT_1 var_40 = ~var_40_arg_0; [L161] SORT_1 var_41_arg_0 = var_13; [L162] SORT_1 var_41_arg_1 = var_40; [L163] SORT_1 var_41 = var_41_arg_0 & var_41_arg_1; [L164] var_41 = var_41 & mask_SORT_1 [L165] SORT_1 bad_42_arg_0 = var_41; [L166] CALL __VERIFIER_assert(!(bad_42_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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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=7occurred 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, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 [2022-11-03 04:05:25,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/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_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b6b79cb1fa4accf5125a3420115b0b09b98cba7b1efdd830c177a3c1ffb8598 --- 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 [2022-11-03 04:05:27,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:05:27,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:05:27,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:05:27,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:05:27,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:05:27,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:05:27,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:05:27,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:05:27,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:05:27,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:05:27,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:05:27,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:05:27,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:05:27,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:05:27,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:05:27,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:05:27,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:05:27,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:05:27,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:05:27,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:05:27,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:05:27,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:05:27,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:05:27,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:05:27,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:05:27,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:05:27,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:05:27,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:05:27,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:05:27,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:05:27,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:05:28,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:05:28,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:05:28,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:05:28,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:05:28,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:05:28,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:05:28,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:05:28,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:05:28,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:05:28,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 04:05:28,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:05:28,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:05:28,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:05:28,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:05:28,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:05:28,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:05:28,072 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:05:28,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:05:28,072 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:05:28,073 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:05:28,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:05:28,073 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:05:28,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:05:28,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:05:28,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:05:28,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:05:28,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:05:28,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:05:28,079 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:05:28,079 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:05:28,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:05:28,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:05:28,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:05:28,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:05:28,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:05:28,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:05:28,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:28,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:05:28,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:05:28,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:05:28,083 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:05:28,083 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:05:28,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:05:28,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:05:28,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:05:28,084 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_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b6b79cb1fa4accf5125a3420115b0b09b98cba7b1efdd830c177a3c1ffb8598 [2022-11-03 04:05:28,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:05:28,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:05:28,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:05:28,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:05:28,528 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:05:28,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c [2022-11-03 04:05:28,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data/14e8095e2/8b6d58fb38974eb48ec2344bf388f628/FLAG674d69864 [2022-11-03 04:05:29,085 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:05:29,086 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c [2022-11-03 04:05:29,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data/14e8095e2/8b6d58fb38974eb48ec2344bf388f628/FLAG674d69864 [2022-11-03 04:05:29,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/data/14e8095e2/8b6d58fb38974eb48ec2344bf388f628 [2022-11-03 04:05:29,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:05:29,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:05:29,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:29,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:05:29,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:05:29,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12503b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29, skipping insertion in model container [2022-11-03 04:05:29,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:05:29,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:05:29,644 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_3caa43e3-9300-45da-9436-f6078f193d29/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c[1107,1120] [2022-11-03 04:05:29,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:05:29,765 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:05:29,787 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_3caa43e3-9300-45da-9436-f6078f193d29/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.zaher.c[1107,1120] [2022-11-03 04:05:29,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:05:29,880 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:05:29,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29 WrapperNode [2022-11-03 04:05:29,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:29,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:05:29,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:05:29,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:05:29,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,947 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 500 [2022-11-03 04:05:29,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:05:29,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:05:29,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:05:29,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:05:29,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,995 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:29,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:30,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:05:30,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:05:30,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:05:30,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:05:30,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (1/1) ... [2022-11-03 04:05:30,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:30,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:30,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:05:30,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:05:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:05:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:05:30,244 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:05:30,246 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:05:30,879 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:05:30,887 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:05:30,888 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:05:30,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:30 BoogieIcfgContainer [2022-11-03 04:05:30,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:05:30,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:05:30,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:05:30,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:05:30,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:05:29" (1/3) ... [2022-11-03 04:05:30,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4deb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:30, skipping insertion in model container [2022-11-03 04:05:30,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:29" (2/3) ... [2022-11-03 04:05:30,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4deb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:30, skipping insertion in model container [2022-11-03 04:05:30,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:30" (3/3) ... [2022-11-03 04:05:30,898 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.zaher.c [2022-11-03 04:05:30,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:05:30,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:05:30,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:05:30,978 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=FINITE_AUTOMATA, 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;@1dd876e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:05:30,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:05:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 63 states have (on average 1.492063492063492) internal successors, (94), 64 states have internal predecessors, (94), 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) [2022-11-03 04:05:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 04:05:30,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:30,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 04:05:30,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 04:05:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:31,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244143656] [2022-11-03 04:05:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:31,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:31,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:31,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:31,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:05:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:31,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 04:05:31,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:31,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:31,384 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:31,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244143656] [2022-11-03 04:05:31,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244143656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:31,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:31,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:05:31,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195107484] [2022-11-03 04:05:31,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:31,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:05:31,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:31,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:05:31,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:05:31,424 INFO L87 Difference]: Start difference. First operand has 65 states, 63 states have (on average 1.492063492063492) internal successors, (94), 64 states have internal predecessors, (94), 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) [2022-11-03 04:05:31,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:31,533 INFO L93 Difference]: Finished difference Result 182 states and 273 transitions. [2022-11-03 04:05:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:05:31,536 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 [2022-11-03 04:05:31,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:31,545 INFO L225 Difference]: With dead ends: 182 [2022-11-03 04:05:31,545 INFO L226 Difference]: Without dead ends: 119 [2022-11-03 04:05:31,548 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 [2022-11-03 04:05:31,552 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 166 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:31,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 247 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-03 04:05:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 63. [2022-11-03 04:05:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4516129032258065) internal successors, (90), 62 states have internal predecessors, (90), 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) [2022-11-03 04:05:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 90 transitions. [2022-11-03 04:05:31,593 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 90 transitions. Word has length 5 [2022-11-03 04:05:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:31,593 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 90 transitions. [2022-11-03 04:05:31,594 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) [2022-11-03 04:05:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 90 transitions. [2022-11-03 04:05:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:31,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:31,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:31,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 04:05:31,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:31,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:31,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1118417279, now seen corresponding path program 1 times [2022-11-03 04:05:31,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:31,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508737922] [2022-11-03 04:05:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:31,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:31,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:31,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:31,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:05:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:32,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 04:05:32,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:32,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:32,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:32,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508737922] [2022-11-03 04:05:32,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508737922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:32,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:32,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:05:32,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113380872] [2022-11-03 04:05:32,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:32,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:05:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:32,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:05:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:05:32,194 INFO L87 Difference]: Start difference. First operand 63 states and 90 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2022-11-03 04:05:32,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:32,322 INFO L93 Difference]: Finished difference Result 235 states and 342 transitions. [2022-11-03 04:05:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:05:32,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:32,324 INFO L225 Difference]: With dead ends: 235 [2022-11-03 04:05:32,324 INFO L226 Difference]: Without dead ends: 176 [2022-11-03 04:05:32,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:05:32,326 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 242 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:32,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 320 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-03 04:05:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 65. [2022-11-03 04:05:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.4375) internal successors, (92), 64 states have internal predecessors, (92), 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) [2022-11-03 04:05:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 92 transitions. [2022-11-03 04:05:32,336 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 92 transitions. Word has length 62 [2022-11-03 04:05:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:32,337 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 92 transitions. [2022-11-03 04:05:32,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2022-11-03 04:05:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 92 transitions. [2022-11-03 04:05:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:32,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:32,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:32,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:32,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:32,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:32,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1915632767, now seen corresponding path program 1 times [2022-11-03 04:05:32,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:32,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217363178] [2022-11-03 04:05:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:32,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:32,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:32,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:32,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 04:05:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:32,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 04:05:32,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:32,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:32,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:32,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217363178] [2022-11-03 04:05:32,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217363178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:32,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:32,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:05:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750884126] [2022-11-03 04:05:32,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:32,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:32,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:32,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:32,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:05:32,932 INFO L87 Difference]: Start difference. First operand 65 states and 92 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-11-03 04:05:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:33,082 INFO L93 Difference]: Finished difference Result 240 states and 346 transitions. [2022-11-03 04:05:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:05:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:33,084 INFO L225 Difference]: With dead ends: 240 [2022-11-03 04:05:33,084 INFO L226 Difference]: Without dead ends: 181 [2022-11-03 04:05:33,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:05:33,086 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 314 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:33,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 469 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:33,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-03 04:05:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 71. [2022-11-03 04:05:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 70 states have internal predecessors, (100), 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) [2022-11-03 04:05:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2022-11-03 04:05:33,095 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 62 [2022-11-03 04:05:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:33,096 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2022-11-03 04:05:33,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-11-03 04:05:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2022-11-03 04:05:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:33,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:33,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:33,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:33,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:33,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:33,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash 350748419, now seen corresponding path program 1 times [2022-11-03 04:05:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:33,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431544647] [2022-11-03 04:05:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:33,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:33,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:33,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:33,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 04:05:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:33,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:05:33,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:33,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:33,812 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:33,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431544647] [2022-11-03 04:05:33,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431544647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:33,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:33,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:05:33,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438898974] [2022-11-03 04:05:33,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:33,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:05:33,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:05:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:05:33,819 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-11-03 04:05:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:34,008 INFO L93 Difference]: Finished difference Result 258 states and 371 transitions. [2022-11-03 04:05:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:05:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:34,011 INFO L225 Difference]: With dead ends: 258 [2022-11-03 04:05:34,012 INFO L226 Difference]: Without dead ends: 199 [2022-11-03 04:05:34,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:05:34,017 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 539 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:34,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 415 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-03 04:05:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 77. [2022-11-03 04:05:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 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) [2022-11-03 04:05:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2022-11-03 04:05:34,041 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 62 [2022-11-03 04:05:34,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:34,041 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2022-11-03 04:05:34,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-11-03 04:05:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2022-11-03 04:05:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:34,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:34,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:34,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:34,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:34,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:34,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:34,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1010279941, now seen corresponding path program 1 times [2022-11-03 04:05:34,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:34,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140074509] [2022-11-03 04:05:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:34,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:34,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:34,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:34,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:05:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:34,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:05:34,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:34,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:34,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:34,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140074509] [2022-11-03 04:05:34,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140074509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:34,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:34,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:05:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621191823] [2022-11-03 04:05:34,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:05:34,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:34,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:05:34,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:05:34,796 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-11-03 04:05:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:34,859 INFO L93 Difference]: Finished difference Result 222 states and 317 transitions. [2022-11-03 04:05:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:05:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:34,863 INFO L225 Difference]: With dead ends: 222 [2022-11-03 04:05:34,863 INFO L226 Difference]: Without dead ends: 157 [2022-11-03 04:05:34,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:34,867 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 92 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:34,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 516 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2022-11-03 04:05:34,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-03 04:05:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 93. [2022-11-03 04:05:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 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) [2022-11-03 04:05:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2022-11-03 04:05:34,885 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 62 [2022-11-03 04:05:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:34,886 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2022-11-03 04:05:34,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-11-03 04:05:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2022-11-03 04:05:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:34,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:34,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:34,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:35,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:35,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:35,103 INFO L85 PathProgramCache]: Analyzing trace with hash 166274439, now seen corresponding path program 1 times [2022-11-03 04:05:35,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:35,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897904106] [2022-11-03 04:05:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:35,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:35,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:35,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:35,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 04:05:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:35,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:05:35,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:35,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:35,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:35,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897904106] [2022-11-03 04:05:35,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897904106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:35,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:35,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:05:35,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635866074] [2022-11-03 04:05:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:35,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:05:35,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:35,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:05:35,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:35,599 INFO L87 Difference]: Start difference. First operand 93 states and 130 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:35,898 INFO L93 Difference]: Finished difference Result 292 states and 416 transitions. [2022-11-03 04:05:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:05:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:35,900 INFO L225 Difference]: With dead ends: 292 [2022-11-03 04:05:35,900 INFO L226 Difference]: Without dead ends: 227 [2022-11-03 04:05:35,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:05:35,901 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 642 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:35,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 598 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-03 04:05:35,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 97. [2022-11-03 04:05:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.40625) internal successors, (135), 96 states have internal predecessors, (135), 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) [2022-11-03 04:05:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2022-11-03 04:05:35,908 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 62 [2022-11-03 04:05:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:35,908 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2022-11-03 04:05:35,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2022-11-03 04:05:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:35,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:35,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:35,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:36,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:36,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:36,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash 93887881, now seen corresponding path program 1 times [2022-11-03 04:05:36,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:36,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636212963] [2022-11-03 04:05:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:36,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:36,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:36,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:36,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 04:05:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:36,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:05:36,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:36,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:36,627 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:36,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636212963] [2022-11-03 04:05:36,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636212963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:36,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:36,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:05:36,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948819343] [2022-11-03 04:05:36,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:36,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:05:36,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:36,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:05:36,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:36,630 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:36,715 INFO L93 Difference]: Finished difference Result 288 states and 407 transitions. [2022-11-03 04:05:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:05:36,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:36,719 INFO L225 Difference]: With dead ends: 288 [2022-11-03 04:05:36,719 INFO L226 Difference]: Without dead ends: 219 [2022-11-03 04:05:36,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:05:36,721 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 226 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:36,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 664 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-03 04:05:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-03 04:05:36,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 105. [2022-11-03 04:05:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 104 states have internal predecessors, (145), 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) [2022-11-03 04:05:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 145 transitions. [2022-11-03 04:05:36,739 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 145 transitions. Word has length 62 [2022-11-03 04:05:36,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:36,739 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 145 transitions. [2022-11-03 04:05:36,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:36,740 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 145 transitions. [2022-11-03 04:05:36,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:36,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:36,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:36,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:36,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:36,956 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:36,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2017115915, now seen corresponding path program 1 times [2022-11-03 04:05:36,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:36,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53805253] [2022-11-03 04:05:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:36,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:36,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:36,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:36,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:05:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:37,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:05:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:37,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:37,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53805253] [2022-11-03 04:05:37,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53805253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:37,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:37,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:05:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896280396] [2022-11-03 04:05:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:37,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:05:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:05:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:37,363 INFO L87 Difference]: Start difference. First operand 105 states and 145 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:37,654 INFO L93 Difference]: Finished difference Result 312 states and 441 transitions. [2022-11-03 04:05:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:05:37,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:37,656 INFO L225 Difference]: With dead ends: 312 [2022-11-03 04:05:37,656 INFO L226 Difference]: Without dead ends: 243 [2022-11-03 04:05:37,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:05:37,657 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 629 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:37,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 611 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-03 04:05:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 113. [2022-11-03 04:05:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3928571428571428) internal successors, (156), 112 states have internal predecessors, (156), 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) [2022-11-03 04:05:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 156 transitions. [2022-11-03 04:05:37,664 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 156 transitions. Word has length 62 [2022-11-03 04:05:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:37,664 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 156 transitions. [2022-11-03 04:05:37,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 156 transitions. [2022-11-03 04:05:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:37,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:37,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:37,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:37,880 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:37,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:37,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2137302771, now seen corresponding path program 1 times [2022-11-03 04:05:37,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829115162] [2022-11-03 04:05:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:37,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:37,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:37,882 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:37,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 04:05:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:38,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:05:38,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:38,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:38,212 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:38,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829115162] [2022-11-03 04:05:38,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829115162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:38,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:38,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:05:38,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066851134] [2022-11-03 04:05:38,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:38,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:38,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:38,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:05:38,214 INFO L87 Difference]: Start difference. First operand 113 states and 156 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-11-03 04:05:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:38,315 INFO L93 Difference]: Finished difference Result 211 states and 296 transitions. [2022-11-03 04:05:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:05:38,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:38,316 INFO L225 Difference]: With dead ends: 211 [2022-11-03 04:05:38,316 INFO L226 Difference]: Without dead ends: 134 [2022-11-03 04:05:38,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:38,317 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 217 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:38,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 169 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-03 04:05:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 113. [2022-11-03 04:05:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3839285714285714) internal successors, (155), 112 states have internal predecessors, (155), 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) [2022-11-03 04:05:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2022-11-03 04:05:38,323 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 62 [2022-11-03 04:05:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:38,323 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2022-11-03 04:05:38,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-11-03 04:05:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2022-11-03 04:05:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:38,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:38,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:38,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:38,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash -331864437, now seen corresponding path program 1 times [2022-11-03 04:05:38,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:38,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796928337] [2022-11-03 04:05:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:38,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:38,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:38,544 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:38,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 04:05:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:38,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:05:38,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:38,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:38,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:38,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796928337] [2022-11-03 04:05:38,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796928337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:38,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:38,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:05:38,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146830177] [2022-11-03 04:05:38,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:38,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:05:38,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:38,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:05:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:38,948 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:39,220 INFO L93 Difference]: Finished difference Result 326 states and 454 transitions. [2022-11-03 04:05:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:05:39,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:39,222 INFO L225 Difference]: With dead ends: 326 [2022-11-03 04:05:39,222 INFO L226 Difference]: Without dead ends: 249 [2022-11-03 04:05:39,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:05:39,223 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 610 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:39,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 613 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-03 04:05:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 119. [2022-11-03 04:05:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 118 states have internal predecessors, (162), 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) [2022-11-03 04:05:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2022-11-03 04:05:39,228 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 62 [2022-11-03 04:05:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:39,229 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2022-11-03 04:05:39,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2022-11-03 04:05:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:39,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:39,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:39,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:39,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:39,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:39,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2020808179, now seen corresponding path program 1 times [2022-11-03 04:05:39,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:39,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580934214] [2022-11-03 04:05:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:39,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:39,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:39,444 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:39,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 04:05:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:39,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:05:39,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:40,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:40,013 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:40,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580934214] [2022-11-03 04:05:40,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580934214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:40,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:40,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:05:40,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921646133] [2022-11-03 04:05:40,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:40,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:05:40,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:05:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:40,016 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:40,432 INFO L93 Difference]: Finished difference Result 330 states and 457 transitions. [2022-11-03 04:05:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:05:40,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:40,434 INFO L225 Difference]: With dead ends: 330 [2022-11-03 04:05:40,434 INFO L226 Difference]: Without dead ends: 247 [2022-11-03 04:05:40,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:05:40,435 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 595 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:40,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 572 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:05:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-03 04:05:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 121. [2022-11-03 04:05:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3666666666666667) internal successors, (164), 120 states have internal predecessors, (164), 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) [2022-11-03 04:05:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 164 transitions. [2022-11-03 04:05:40,441 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 164 transitions. Word has length 62 [2022-11-03 04:05:40,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:40,441 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 164 transitions. [2022-11-03 04:05:40,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-03 04:05:40,441 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 164 transitions. [2022-11-03 04:05:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:40,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:40,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:40,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:40,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:40,654 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash 685811215, now seen corresponding path program 1 times [2022-11-03 04:05:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:40,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726269329] [2022-11-03 04:05:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:40,657 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:40,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 04:05:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:40,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:05:40,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:40,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:05:41,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:41,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726269329] [2022-11-03 04:05:41,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726269329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:41,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:41,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:05:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624002632] [2022-11-03 04:05:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:41,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:05:41,002 INFO L87 Difference]: Start difference. First operand 121 states and 164 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-11-03 04:05:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:41,138 INFO L93 Difference]: Finished difference Result 249 states and 341 transitions. [2022-11-03 04:05:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:05:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2022-11-03 04:05:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:41,139 INFO L225 Difference]: With dead ends: 249 [2022-11-03 04:05:41,139 INFO L226 Difference]: Without dead ends: 164 [2022-11-03 04:05:41,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:05:41,140 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 200 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:41,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 204 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-03 04:05:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 121. [2022-11-03 04:05:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3583333333333334) internal successors, (163), 120 states have internal predecessors, (163), 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) [2022-11-03 04:05:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 163 transitions. [2022-11-03 04:05:41,147 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 163 transitions. Word has length 62 [2022-11-03 04:05:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:41,147 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 163 transitions. [2022-11-03 04:05:41,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-11-03 04:05:41,148 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 163 transitions. [2022-11-03 04:05:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 04:05:41,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:41,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:41,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:41,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:41,364 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash 5752845, now seen corresponding path program 1 times [2022-11-03 04:05:41,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:41,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772902554] [2022-11-03 04:05:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:41,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:41,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:41,367 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:41,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 04:05:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:41,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 04:05:41,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:41,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:42,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:42,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772902554] [2022-11-03 04:05:42,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772902554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:05:42,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1574130466] [2022-11-03 04:05:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:42,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:05:42,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:05:42,583 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:05:42,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 04:05:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:42,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 04:05:42,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:43,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:43,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1574130466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:05:43,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548216612] [2022-11-03 04:05:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:43,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:43,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:43,787 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:43,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 04:05:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:43,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 04:05:44,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:44,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:05:44,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548216612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:05:44,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:05:44,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 12 [2022-11-03 04:05:44,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205479035] [2022-11-03 04:05:44,848 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:05:44,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 04:05:44,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 04:05:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:05:44,850 INFO L87 Difference]: Start difference. First operand 121 states and 163 transitions. Second operand has 12 states, 12 states have (on average 10.5) internal successors, (126), 12 states have internal predecessors, (126), 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) [2022-11-03 04:05:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:44,986 INFO L93 Difference]: Finished difference Result 121 states and 163 transitions. [2022-11-03 04:05:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:05:44,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.5) internal successors, (126), 12 states have internal predecessors, (126), 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 62 [2022-11-03 04:05:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:44,987 INFO L225 Difference]: With dead ends: 121 [2022-11-03 04:05:44,987 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 04:05:44,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 354 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-03 04:05:44,988 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 292 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:44,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 156 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-03 04:05:44,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 04:05:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 04:05:44,989 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) [2022-11-03 04:05:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 04:05:44,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2022-11-03 04:05:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:44,989 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 04:05:44,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.5) internal successors, (126), 12 states have internal predecessors, (126), 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) [2022-11-03 04:05:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 04:05:44,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 04:05:44,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:05:45,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:45,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:45,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:45,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:45,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 04:05:46,409 INFO L899 garLoopResultBuilder]: For program point L192(line 192) no Hoare annotation was computed. [2022-11-03 04:05:46,409 INFO L899 garLoopResultBuilder]: For program point L192-2(line 192) no Hoare annotation was computed. [2022-11-03 04:05:46,409 INFO L899 garLoopResultBuilder]: For program point L316(line 316) no Hoare annotation was computed. [2022-11-03 04:05:46,409 INFO L899 garLoopResultBuilder]: For program point L316-2(line 316) no Hoare annotation was computed. [2022-11-03 04:05:46,409 INFO L899 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2022-11-03 04:05:46,409 INFO L899 garLoopResultBuilder]: For program point L209-2(line 209) no Hoare annotation was computed. [2022-11-03 04:05:46,409 INFO L899 garLoopResultBuilder]: For program point L234(line 234) no Hoare annotation was computed. [2022-11-03 04:05:46,409 INFO L899 garLoopResultBuilder]: For program point L234-2(line 234) no Hoare annotation was computed. [2022-11-03 04:05:46,410 INFO L895 garLoopResultBuilder]: At program point L391(lines 22 392) the Hoare annotation is: false [2022-11-03 04:05:46,410 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 04:05:46,410 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 04:05:46,410 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-03 04:05:46,410 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-03 04:05:46,410 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-03 04:05:46,410 INFO L899 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2022-11-03 04:05:46,410 INFO L899 garLoopResultBuilder]: For program point L177-2(line 177) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L895 garLoopResultBuilder]: At program point L103-2(lines 103 390) the Hoare annotation is: (let ((.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse2 (= |ULTIMATE.start_main_~var_5~0#1| (_ bv0 8))) (.cse3 (= (_ bv43 8) |ULTIMATE.start_main_~var_126~0#1|)) (.cse4 (= |ULTIMATE.start_main_~var_99~0#1| (_ bv0 8))) (.cse5 (= (_ bv2 8) |ULTIMATE.start_main_~var_118~0#1|)) (.cse6 (= (_ bv4 8) |ULTIMATE.start_main_~var_115~0#1|))) (or (and (let ((.cse0 (= ((_ zero_extend 24) |ULTIMATE.start_main_~var_98~0#1|) (_ bv43 32)))) (or (and (= |ULTIMATE.start_main_~var_128_arg_0~0#1| (_ bv0 8)) (not .cse0)) (and .cse0 (= (_ bv1 8) |ULTIMATE.start_main_~var_128_arg_0~0#1|)))) .cse1 (= (_ bv1 8) |ULTIMATE.start_main_~var_143_arg_0~0#1|) .cse2 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= (_ bv1 8) |ULTIMATE.start_main_~var_108_arg_0~0#1|) .cse3 .cse4 (= (bvadd (_ bv1 8) |ULTIMATE.start_main_~next_63_arg_1~0#1|) (_ bv0 8)) .cse5 (= (_ bv1 8) |ULTIMATE.start_main_~var_78~0#1|) .cse6 (= (bvadd (_ bv1 8) |ULTIMATE.start_main_~state_14~0#1|) (_ bv0 8))) (and .cse1 .cse2 (= (_ bv0 8) |ULTIMATE.start_main_~state_22~0#1|) .cse3 .cse4 (= |ULTIMATE.start_main_~state_6~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_94~0#1| (_ bv0 32)) .cse5 .cse6))) [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L103-3(lines 103 390) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L368(line 368) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L368-2(line 368) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L360(line 360) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L360-2(line 360) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L352(line 352) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L352-2(line 352) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L344(line 344) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L278(line 278) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L344-2(line 344) no Hoare annotation was computed. [2022-11-03 04:05:46,411 INFO L899 garLoopResultBuilder]: For program point L278-2(line 278) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L336(line 336) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L336-2(line 336) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L328(line 328) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L328-2(line 328) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L320(line 320) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L320-2(line 320) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L312(line 312) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L312-2(line 312) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L238(line 238) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L238-2(line 238) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L296(line 296) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L230(line 230) no Hoare annotation was computed. [2022-11-03 04:05:46,412 INFO L899 garLoopResultBuilder]: For program point L296-2(line 296) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L230-2(line 230) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L372(line 372) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L372-2(line 372) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L364(line 364) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L364-2(line 364) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L356(line 356) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L356-2(line 356) no Hoare annotation was computed. [2022-11-03 04:05:46,413 INFO L899 garLoopResultBuilder]: For program point L348(line 348) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L282(line 282) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L348-2(line 348) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L216(line 216) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L282-2(line 282) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L216-2(line 216) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L340(line 340) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L274(line 274) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L340-2(line 340) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L274-2(line 274) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L332(line 332) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L332-2(line 332) no Hoare annotation was computed. [2022-11-03 04:05:46,414 INFO L899 garLoopResultBuilder]: For program point L324(line 324) no Hoare annotation was computed. [2022-11-03 04:05:46,415 INFO L899 garLoopResultBuilder]: For program point L324-2(line 324) no Hoare annotation was computed. [2022-11-03 04:05:46,419 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:46,421 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:05:46,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:05:46 BoogieIcfgContainer [2022-11-03 04:05:46,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:05:46,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:05:46,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:05:46,438 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:05:46,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:30" (3/4) ... [2022-11-03 04:05:46,441 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 04:05:46,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 04:05:46,458 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 04:05:46,458 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 04:05:46,503 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) [2022-11-03 04:05:46,506 INFO L158 Benchmark]: Toolchain (without parser) took 17061.18ms. Allocated memory was 83.9MB in the beginning and 207.6MB in the end (delta: 123.7MB). Free memory was 48.1MB in the beginning and 99.5MB in the end (delta: -51.4MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. [2022-11-03 04:05:46,506 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:05:46,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.55ms. Allocated memory is still 83.9MB. Free memory was 48.0MB in the beginning and 62.4MB in the end (delta: -14.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-11-03 04:05:46,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.50ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 58.5MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:05:46,507 INFO L158 Benchmark]: Boogie Preprocessor took 54.35ms. Allocated memory is still 83.9MB. Free memory was 58.5MB in the beginning and 55.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:05:46,508 INFO L158 Benchmark]: RCFGBuilder took 887.26ms. Allocated memory is still 83.9MB. Free memory was 55.8MB in the beginning and 50.1MB in the end (delta: 5.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-11-03 04:05:46,508 INFO L158 Benchmark]: TraceAbstraction took 15544.90ms. Allocated memory was 83.9MB in the beginning and 207.6MB in the end (delta: 123.7MB). Free memory was 49.6MB in the beginning and 103.7MB in the end (delta: -54.1MB). Peak memory consumption was 109.6MB. Max. memory is 16.1GB. [2022-11-03 04:05:46,508 INFO L158 Benchmark]: Witness Printer took 68.18ms. Allocated memory is still 207.6MB. Free memory was 103.7MB in the beginning and 99.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:05:46,510 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.55ms. Allocated memory is still 83.9MB. Free memory was 48.0MB in the beginning and 62.4MB in the end (delta: -14.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.50ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 58.5MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.35ms. Allocated memory is still 83.9MB. Free memory was 58.5MB in the beginning and 55.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 887.26ms. Allocated memory is still 83.9MB. Free memory was 55.8MB in the beginning and 50.1MB in the end (delta: 5.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * TraceAbstraction took 15544.90ms. Allocated memory was 83.9MB in the beginning and 207.6MB in the end (delta: 123.7MB). Free memory was 49.6MB in the beginning and 103.7MB in the end (delta: -54.1MB). Peak memory consumption was 109.6MB. Max. memory is 16.1GB. * Witness Printer took 68.18ms. Allocated memory is still 207.6MB. Free memory was 103.7MB in the beginning and 99.5MB in the end (delta: 4.2MB). 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, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.5s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4764 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4764 mSDsluCounter, 5554 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53 IncrementalHoareTripleChecker+Unchecked, 4144 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 450 IncrementalHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 1410 mSDtfsCounter, 450 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1088 GetRequests, 983 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=11, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 1157 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 89 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 2 FomulaSimplificationsInter, 42824 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 873 NumberOfCodeBlocks, 873 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1041 ConstructedInterpolants, 190 QuantifiedInterpolants, 13422 SizeOfPredicates, 239 NumberOfNonLiveVariables, 6229 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 22/34 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: 103]: Loop Invariant Derived loop invariant: ((((((((((((((var_128_arg_0 == 0bv8 && !(~zero_extendFrom8To32(var_98) == 43bv32)) || (~zero_extendFrom8To32(var_98) == 43bv32 && 1bv8 == var_128_arg_0)) && 1bv8 == mask_SORT_1) && 1bv8 == var_143_arg_0) && var_5 == 0bv8) && cond == 1bv32) && 1bv8 == var_108_arg_0) && 43bv8 == var_126) && var_99 == 0bv8) && ~bvadd64(1bv8, next_63_arg_1) == 0bv8) && 2bv8 == var_118) && 1bv8 == var_78) && 4bv8 == var_115) && ~bvadd64(1bv8, state_14) == 0bv8) || ((((((((1bv8 == mask_SORT_1 && var_5 == 0bv8) && 0bv8 == state_22) && 43bv8 == var_126) && var_99 == 0bv8) && state_6 == 0bv8) && var_94 == 0bv32) && 2bv8 == var_118) && 4bv8 == var_115) - 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. [2022-11-03 04:05:46,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3caa43e3-9300-45da-9436-f6078f193d29/bin/utaipan-7li7fVZpFI/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