./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/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 32bit --witnessprinter.graph.data.programhash 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 --- 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 02:37:25,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:37:25,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:37:25,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:37:25,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:37:25,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:37:25,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:37:25,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:37:25,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:37:25,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:37:25,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:37:25,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:37:25,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:37:25,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:37:25,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:37:25,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:37:25,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:37:25,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:37:25,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:37:25,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:37:25,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:37:25,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:37:25,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:37:25,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:37:25,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:37:25,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:37:25,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:37:25,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:37:25,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:37:25,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:37:25,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:37:25,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:37:25,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:37:25,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:37:25,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:37:25,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:37:25,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:37:25,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:37:25,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:37:25,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:37:25,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:37:25,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:37:25,160 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:37:25,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:37:25,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:37:25,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:37:25,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:37:25,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:37:25,162 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:37:25,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:37:25,163 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:37:25,163 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:37:25,163 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:37:25,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:37:25,164 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:37:25,164 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:37:25,164 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:37:25,164 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:37:25,165 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:37:25,165 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:37:25,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:37:25,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:37:25,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:37:25,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:37:25,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:37:25,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:37:25,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:37:25,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:37:25,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:37:25,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:37:25,168 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:37:25,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:37:25,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:37:25,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:37:25,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:25,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:37:25,169 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:37:25,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:37:25,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:37:25,170 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:37:25,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:37:25,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:37:25,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:37:25,171 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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 [2022-11-03 02:37:25,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:37:25,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:37:25,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:37:25,486 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:37:25,487 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:37:25,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2022-11-03 02:37:25,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data/b30d3182b/cb63d97f145246cbb0543f2ff15facbe/FLAGcf1118c01 [2022-11-03 02:37:26,058 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:37:26,058 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2022-11-03 02:37:26,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data/b30d3182b/cb63d97f145246cbb0543f2ff15facbe/FLAGcf1118c01 [2022-11-03 02:37:26,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data/b30d3182b/cb63d97f145246cbb0543f2ff15facbe [2022-11-03 02:37:26,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:37:26,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:37:26,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:26,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:37:26,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:37:26,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5594f42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26, skipping insertion in model container [2022-11-03 02:37:26,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:37:26,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:37:26,751 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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2022-11-03 02:37:26,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:26,762 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:37:26,837 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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2022-11-03 02:37:26,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:26,879 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:37:26,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26 WrapperNode [2022-11-03 02:37:26,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:26,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:26,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:37:26,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:37:26,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,954 INFO L138 Inliner]: procedures = 127, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 114 [2022-11-03 02:37:26,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:26,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:37:26,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:37:26,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:37:26,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:26,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:27,006 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:27,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:27,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:37:27,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:37:27,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:37:27,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:37:27,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (1/1) ... [2022-11-03 02:37:27,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:27,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:27,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:37:27,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:37:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-03 02:37:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-03 02:37:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:37:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:37:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:37:27,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:37:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:37:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:37:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:37:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:37:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:37:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:37:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:37:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:37:27,217 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:37:27,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:37:27,282 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-03 02:37:27,603 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:37:27,721 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:37:27,722 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:37:27,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:27 BoogieIcfgContainer [2022-11-03 02:37:27,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:37:27,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:37:27,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:37:27,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:37:27,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:37:26" (1/3) ... [2022-11-03 02:37:27,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82168b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:27, skipping insertion in model container [2022-11-03 02:37:27,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:26" (2/3) ... [2022-11-03 02:37:27,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82168b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:27, skipping insertion in model container [2022-11-03 02:37:27,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:27" (3/3) ... [2022-11-03 02:37:27,738 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal.i [2022-11-03 02:37:27,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:37:27,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:37:27,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:37:27,833 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;@7c738933, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:37:27,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:37:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:37:27,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:27,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:27,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1605963889, now seen corresponding path program 1 times [2022-11-03 02:37:27,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:27,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462073628] [2022-11-03 02:37:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:27,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:28,280 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 02:37:28,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:28,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462073628] [2022-11-03 02:37:28,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462073628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:28,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:28,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:37:28,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274931900] [2022-11-03 02:37:28,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:28,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:37:28,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:37:28,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:37:28,319 INFO L87 Difference]: Start difference. First operand has 18 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 02:37:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:28,412 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2022-11-03 02:37:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:37:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-03 02:37:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:28,421 INFO L225 Difference]: With dead ends: 35 [2022-11-03 02:37:28,421 INFO L226 Difference]: Without dead ends: 14 [2022-11-03 02:37:28,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:37:28,428 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:28,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:37:28,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-03 02:37:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-03 02:37:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:37:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-03 02:37:28,463 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2022-11-03 02:37:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:28,464 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-03 02:37:28,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 02:37:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-03 02:37:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:37:28,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:28,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:28,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:37:28,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:28,467 INFO L85 PathProgramCache]: Analyzing trace with hash -328058992, now seen corresponding path program 1 times [2022-11-03 02:37:28,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:28,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198821948] [2022-11-03 02:37:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:28,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:28,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198821948] [2022-11-03 02:37:28,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198821948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:28,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038475452] [2022-11-03 02:37:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:28,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:28,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:28,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:28,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:37:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:28,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:37:28,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:28,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:28,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038475452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:28,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1210510264] [2022-11-03 02:37:29,020 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-03 02:37:29,020 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:29,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:29,030 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:29,031 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:29,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,148 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:37:29,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-03 02:37:29,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 02:37:29,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,264 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 02:37:29,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 02:37:29,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,330 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:37:29,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 02:37:29,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2022-11-03 02:37:29,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-03 02:37:29,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 02:37:29,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:29,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 02:37:29,800 INFO L356 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2022-11-03 02:37:29,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 275 treesize of output 284 [2022-11-03 02:37:29,951 INFO L356 Elim1Store]: treesize reduction 132, result has 20.0 percent of original size [2022-11-03 02:37:29,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 278 treesize of output 294 [2022-11-03 02:37:30,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,695 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-03 02:37:30,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 283 treesize of output 269 [2022-11-03 02:37:30,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,797 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 02:37:30,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 287 treesize of output 272 [2022-11-03 02:37:30,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 267 [2022-11-03 02:37:30,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 267 [2022-11-03 02:37:30,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:30,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:30,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:30,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:31,049 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 02:37:31,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 423 treesize of output 451 [2022-11-03 02:37:31,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:31,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:31,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:31,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:31,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 488 treesize of output 523 [2022-11-03 02:37:31,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 54 [2022-11-03 02:37:31,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-03 02:37:31,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:31,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 17 [2022-11-03 02:37:31,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:31,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:31,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:31,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:31,243 INFO L356 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2022-11-03 02:37:31,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 415 treesize of output 370 [2022-11-03 02:37:31,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 54 [2022-11-03 02:37:31,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:31,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 02:37:31,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-03 02:37:32,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:37:32,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:37:32,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:32,222 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 02:37:32,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 189 [2022-11-03 02:37:32,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:32,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:32,310 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-11-03 02:37:32,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 173 [2022-11-03 02:37:32,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 02:37:32,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-11-03 02:37:32,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2022-11-03 02:37:32,494 INFO L356 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2022-11-03 02:37:32,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 142 treesize of output 101 [2022-11-03 02:37:32,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 71 [2022-11-03 02:37:32,573 INFO L356 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2022-11-03 02:37:32,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 194 treesize of output 145 [2022-11-03 02:37:32,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 91 [2022-11-03 02:37:32,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-03 02:37:32,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:37:32,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:37:32,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:37:32,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:37:32,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:32,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:32,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:32,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:58,407 WARN L234 SmtUtils]: Spent 25.52s on a formula simplification. DAG size of input: 177 DAG size of output: 93 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:37:58,409 INFO L356 Elim1Store]: treesize reduction 1115, result has 17.7 percent of original size [2022-11-03 02:37:58,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 1599 treesize of output 2446 [2022-11-03 02:37:58,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:58,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:58,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:37:58,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:37:58,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:43,948 WARN L234 SmtUtils]: Spent 4.75m on a formula simplification. DAG size of input: 220 DAG size of output: 139 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:42:43,949 INFO L356 Elim1Store]: treesize reduction 655, result has 38.4 percent of original size [2022-11-03 02:42:43,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:44,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:44,152 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_78| input size 913 context size 913 output size 913 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) 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 02:42:44,156 INFO L158 Benchmark]: Toolchain (without parser) took 317742.42ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 69.9MB in the beginning and 119.1MB in the end (delta: -49.2MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2022-11-03 02:42:44,157 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory was 58.2MB in the beginning and 58.1MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:42:44,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.20ms. Allocated memory is still 102.8MB. Free memory was 69.6MB in the beginning and 69.8MB in the end (delta: -261.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:42:44,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.30ms. Allocated memory is still 102.8MB. Free memory was 69.8MB in the beginning and 67.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:42:44,158 INFO L158 Benchmark]: Boogie Preprocessor took 63.01ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 66.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:42:44,159 INFO L158 Benchmark]: RCFGBuilder took 704.75ms. Allocated memory is still 102.8MB. Free memory was 66.1MB in the beginning and 43.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 02:42:44,160 INFO L158 Benchmark]: TraceAbstraction took 316428.55ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 42.1MB in the beginning and 119.1MB in the end (delta: -77.0MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. [2022-11-03 02:42:44,162 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 102.8MB. Free memory was 58.2MB in the beginning and 58.1MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.20ms. Allocated memory is still 102.8MB. Free memory was 69.6MB in the beginning and 69.8MB in the end (delta: -261.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.30ms. Allocated memory is still 102.8MB. Free memory was 69.8MB in the beginning and 67.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.01ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 66.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 704.75ms. Allocated memory is still 102.8MB. Free memory was 66.1MB in the beginning and 43.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 316428.55ms. Allocated memory was 102.8MB in the beginning and 180.4MB in the end (delta: 77.6MB). Free memory was 42.1MB in the beginning and 119.1MB in the end (delta: -77.0MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_78| input size 913 context size 913 output size 913 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_78| input size 913 context size 913 output size 913: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:42:44,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/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 32bit --witnessprinter.graph.data.programhash 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 --- 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 02:42:46,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:42:46,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:42:46,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:42:46,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:42:46,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:42:46,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:42:46,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:42:46,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:42:46,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:42:46,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:42:46,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:42:46,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:42:46,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:42:46,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:42:46,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:42:46,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:42:46,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:42:46,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:42:46,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:42:46,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:42:46,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:42:46,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:42:46,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:42:46,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:42:46,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:42:46,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:42:46,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:42:46,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:42:46,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:42:46,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:42:46,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:42:46,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:42:46,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:42:46,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:42:46,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:42:46,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:42:46,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:42:46,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:42:46,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:42:46,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:42:46,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:42:46,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:42:46,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:42:46,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:42:46,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:42:46,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:42:46,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:42:46,755 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:42:46,756 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:42:46,756 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:42:46,756 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:42:46,757 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:42:46,757 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:42:46,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:42:46,759 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:42:46,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:42:46,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:42:46,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:42:46,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:42:46,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:42:46,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:42:46,761 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:42:46,761 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:42:46,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:42:46,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:42:46,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:42:46,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:42:46,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:42:46,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:42:46,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:42:46,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:42:46,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:42:46,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:42:46,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:42:46,764 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:42:46,764 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:42:46,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:42:46,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:42:46,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:42:46,765 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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 [2022-11-03 02:42:47,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:42:47,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:42:47,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:42:47,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:42:47,143 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:42:47,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2022-11-03 02:42:47,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data/13845b99f/966ecac9431d4766b3f635ab74b2f215/FLAG32caa19f5 [2022-11-03 02:42:47,893 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:42:47,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2022-11-03 02:42:47,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data/13845b99f/966ecac9431d4766b3f635ab74b2f215/FLAG32caa19f5 [2022-11-03 02:42:48,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/data/13845b99f/966ecac9431d4766b3f635ab74b2f215 [2022-11-03 02:42:48,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:42:48,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:42:48,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:42:48,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:42:48,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:42:48,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63324e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48, skipping insertion in model container [2022-11-03 02:42:48,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:42:48,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:42:48,676 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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2022-11-03 02:42:48,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:42:48,708 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:42:48,769 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_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2022-11-03 02:42:48,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:42:48,819 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:42:48,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48 WrapperNode [2022-11-03 02:42:48,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:42:48,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:42:48,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:42:48,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:42:48,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,895 INFO L138 Inliner]: procedures = 130, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 115 [2022-11-03 02:42:48,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:42:48,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:42:48,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:42:48,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:42:48,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,949 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:42:48,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:42:48,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:42:48,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:42:48,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (1/1) ... [2022-11-03 02:42:48,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:42:48,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:49,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:42:49,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:42:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-03 02:42:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-03 02:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:42:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:42:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:42:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:42:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:42:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:42:49,244 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:42:49,247 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:42:49,287 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-03 02:42:49,657 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:42:49,663 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:42:49,663 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:42:49,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:42:49 BoogieIcfgContainer [2022-11-03 02:42:49,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:42:49,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:42:49,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:42:49,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:42:49,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:42:48" (1/3) ... [2022-11-03 02:42:49,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23be07ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:42:49, skipping insertion in model container [2022-11-03 02:42:49,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:48" (2/3) ... [2022-11-03 02:42:49,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23be07ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:42:49, skipping insertion in model container [2022-11-03 02:42:49,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:42:49" (3/3) ... [2022-11-03 02:42:49,677 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal.i [2022-11-03 02:42:49,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:42:49,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:42:49,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:42:49,752 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;@4e61621, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:42:49,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:42:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 25 states have (on average 1.52) internal successors, (38), 27 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:42:49,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:49,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:49,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:49,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:49,771 INFO L85 PathProgramCache]: Analyzing trace with hash 692830707, now seen corresponding path program 1 times [2022-11-03 02:42:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:49,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484506379] [2022-11-03 02:42:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:49,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:49,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:49,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:49,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:42:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:50,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:42:50,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:50,075 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 02:42:50,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:50,076 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:50,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484506379] [2022-11-03 02:42:50,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484506379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:50,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:50,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:42:50,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272153876] [2022-11-03 02:42:50,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:50,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:42:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:42:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:42:50,127 INFO L87 Difference]: Start difference. First operand has 29 states, 25 states have (on average 1.52) internal successors, (38), 27 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:50,153 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2022-11-03 02:42:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:42:50,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:42:50,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:50,164 INFO L225 Difference]: With dead ends: 50 [2022-11-03 02:42:50,164 INFO L226 Difference]: Without dead ends: 20 [2022-11-03 02:42:50,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:42:50,173 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:50,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:42:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-03 02:42:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-03 02:42:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-03 02:42:50,218 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2022-11-03 02:42:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:50,218 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-03 02:42:50,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-03 02:42:50,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:42:50,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:50,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:50,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:50,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:50,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:50,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:50,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1759740954, now seen corresponding path program 1 times [2022-11-03 02:42:50,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:50,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245044174] [2022-11-03 02:42:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:50,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:50,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:50,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:50,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:42:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:50,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:42:50,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:50,659 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 02:42:50,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:50,661 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:50,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245044174] [2022-11-03 02:42:50,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245044174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:50,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:50,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:42:50,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221156953] [2022-11-03 02:42:50,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:50,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:42:50,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:42:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:50,674 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:50,706 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-03 02:42:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 02:42:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:50,707 INFO L225 Difference]: With dead ends: 38 [2022-11-03 02:42:50,707 INFO L226 Difference]: Without dead ends: 25 [2022-11-03 02:42:50,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:50,709 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:50,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:42:50,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-03 02:42:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-11-03 02:42:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 02:42:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-03 02:42:50,714 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2022-11-03 02:42:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:50,714 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-03 02:42:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-03 02:42:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:42:50,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:50,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:50,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:50,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:50,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash 675600054, now seen corresponding path program 1 times [2022-11-03 02:42:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:50,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776303499] [2022-11-03 02:42:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:50,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:50,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:50,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:42:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:51,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:42:51,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:51,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:51,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:51,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776303499] [2022-11-03 02:42:51,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776303499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:51,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:51,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:42:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826259819] [2022-11-03 02:42:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:51,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:42:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:42:51,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:51,192 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:51,338 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-11-03 02:42:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:51,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:42:51,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:51,341 INFO L225 Difference]: With dead ends: 43 [2022-11-03 02:42:51,341 INFO L226 Difference]: Without dead ends: 25 [2022-11-03 02:42:51,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:42:51,342 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:51,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 40 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:42:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-03 02:42:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-03 02:42:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-03 02:42:51,351 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2022-11-03 02:42:51,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:51,353 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-03 02:42:51,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-03 02:42:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 02:42:51,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:51,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:51,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:51,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:51,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash -335517196, now seen corresponding path program 1 times [2022-11-03 02:42:51,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:51,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142640360] [2022-11-03 02:42:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:51,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:51,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:51,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:51,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:42:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:51,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:42:51,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:51,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:51,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:51,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142640360] [2022-11-03 02:42:51,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142640360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:51,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [691779497] [2022-11-03 02:42:51,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:51,851 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:42:51,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:42:51,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:42:51,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-03 02:42:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:52,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:42:52,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:52,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:52,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [691779497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:52,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020682161] [2022-11-03 02:42:52,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:52,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:52,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:52,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:52,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:42:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:52,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:42:52,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:52,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:52,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020682161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:52,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:42:52,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 5] total 7 [2022-11-03 02:42:52,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013472064] [2022-11-03 02:42:52,398 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:42:52,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:52,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:52,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:52,401 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:52,497 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-11-03 02:42:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:42:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-03 02:42:52,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:52,501 INFO L225 Difference]: With dead ends: 49 [2022-11-03 02:42:52,501 INFO L226 Difference]: Without dead ends: 36 [2022-11-03 02:42:52,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:42:52,502 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 43 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:52,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:42:52,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-03 02:42:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-03 02:42:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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 02:42:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-11-03 02:42:52,510 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 19 [2022-11-03 02:42:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:52,510 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-11-03 02:42:52,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:52,511 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-11-03 02:42:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 02:42:52,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:52,511 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:52,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:52,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:52,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-03 02:42:53,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:53,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:53,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1568046744, now seen corresponding path program 1 times [2022-11-03 02:42:53,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:53,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697142578] [2022-11-03 02:42:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:53,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:53,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:53,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:53,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:42:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:53,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 02:42:53,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:53,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 02:42:53,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:42:53,758 INFO L356 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-03 02:42:53,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-11-03 02:42:53,963 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 02:42:53,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-11-03 02:42:53,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:42:53,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:54,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:54,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-03 02:42:54,233 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 02:42:54,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-11-03 02:42:54,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-03 02:42:54,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-03 02:42:54,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:42:54,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:54,565 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-03 02:42:54,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-03 02:42:54,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:42:54,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:54,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-03 02:42:54,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 02:42:54,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 02:42:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:42:54,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:54,896 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:54,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697142578] [2022-11-03 02:42:54,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697142578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:54,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:54,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 02:42:54,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663057743] [2022-11-03 02:42:54,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:54,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:42:54,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:54,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:42:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:42:54,898 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:55,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:55,527 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-11-03 02:42:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:42:55,528 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-03 02:42:55,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:55,529 INFO L225 Difference]: With dead ends: 41 [2022-11-03 02:42:55,529 INFO L226 Difference]: Without dead ends: 39 [2022-11-03 02:42:55,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:42:55,530 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:55,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 83 Unchecked, 0.4s Time] [2022-11-03 02:42:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-03 02:42:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-11-03 02:42:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-03 02:42:55,540 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2022-11-03 02:42:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:55,541 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-03 02:42:55,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-03 02:42:55,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 02:42:55,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:55,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:55,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:55,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:55,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1568048418, now seen corresponding path program 1 times [2022-11-03 02:42:55,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:55,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885364899] [2022-11-03 02:42:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:55,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:55,759 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:55,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:42:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:55,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:42:55,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:56,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:42:56,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-03 02:42:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 02:42:56,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:56,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:56,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885364899] [2022-11-03 02:42:56,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885364899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:56,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:56,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:56,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599359540] [2022-11-03 02:42:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:56,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:56,113 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 02:42:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:56,427 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-03 02:42:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:42:56,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 24 [2022-11-03 02:42:56,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:56,429 INFO L225 Difference]: With dead ends: 41 [2022-11-03 02:42:56,429 INFO L226 Difference]: Without dead ends: 38 [2022-11-03 02:42:56,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:42:56,430 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:56,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 66 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:42:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-03 02:42:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-03 02:42:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 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 02:42:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2022-11-03 02:42:56,440 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 24 [2022-11-03 02:42:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:56,441 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2022-11-03 02:42:56,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 02:42:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2022-11-03 02:42:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:42:56,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:56,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:56,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:56,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:56,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:56,658 INFO L85 PathProgramCache]: Analyzing trace with hash 640634787, now seen corresponding path program 1 times [2022-11-03 02:42:56,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:56,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009279930] [2022-11-03 02:42:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:56,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:56,659 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:56,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_177d08ff-f7c9-435f-8bc2-20e0d725e8e5/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:42:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:56,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:42:56,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:57,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-03 02:42:57,202 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 02:42:57,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 02:42:57,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:57,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:57,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 02:42:57,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:42:57,832 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-03 02:42:57,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-03 02:42:58,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:58,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-03 02:42:58,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-03 02:42:58,113 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 02:42:58,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 02:42:58,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:42:58,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:58,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2022-11-03 02:42:58,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-03 02:42:58,455 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-03 02:42:58,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-03 02:42:58,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:58,708 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-03 02:42:58,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 85 [2022-11-03 02:42:58,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:58,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2022-11-03 02:42:58,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:58,794 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-03 02:42:58,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 42 [2022-11-03 02:42:58,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-11-03 02:42:59,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:59,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 32 [2022-11-03 02:42:59,085 INFO L356 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-03 02:42:59,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 36 [2022-11-03 02:42:59,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:42:59,134 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 02:42:59,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 25 [2022-11-03 02:42:59,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:42:59,557 INFO L356 Elim1Store]: treesize reduction 31, result has 8.8 percent of original size [2022-11-03 02:42:59,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 47 [2022-11-03 02:42:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:42:59,590 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 02:42:59,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-03 02:42:59,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 02:42:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:59,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:43:00,368 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_563 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|))) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_563) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))))) is different from false [2022-11-03 02:43:00,656 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (_ BitVec 32)) (v_ArrVal_556 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_557 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse4 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_557))) (store .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse1 (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_556))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (bvadd (_ bv4 32) (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (select (select (store (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) v_ArrVal_555)) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_563) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))))) is different from false [2022-11-03 02:43:00,989 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_551 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (_ BitVec 32)) (v_ArrVal_556 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_557 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse10 (bvadd (_ bv4 32) |c_ULTIMATE.start_node_create_#res#1.offset|))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base|) .cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base|) .cse10 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse1 (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse6 (let ((.cse9 (store .cse2 .cse1 v_ArrVal_557))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_#res#1.offset|)))) (.cse3 (let ((.cse7 (store .cse8 .cse1 v_ArrVal_556))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_#res#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_node_create_#res#1.base| v_ArrVal_551))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (select (select .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) (_ bv8 32)) v_ArrVal_555))) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_563) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))))))) is different from false [2022-11-03 02:43:01,764 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_551 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_549 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (_ BitVec 32)) (v_ArrVal_545 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_556 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_557 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse10 (bvadd |c_ULTIMATE.start_node_create_~temp~0#1.offset| (_ bv4 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_549 .cse10 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_549) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_545 .cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_545) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse1 (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse6 (let ((.cse9 (store .cse2 .cse1 v_ArrVal_557))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (.cse3 (let ((.cse7 (store .cse8 .cse1 v_ArrVal_556))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_551))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv8 32) (select (select .cse2 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) v_ArrVal_555))) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_563) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2022-11-03 02:43:02,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25898 treesize of output 24348 [2022-11-03 02:43:02,600 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:43:02,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27036 treesize of output 25366 [2022-11-03 02:43:02,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29352 treesize of output 28260 [2022-11-03 02:43:02,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1044528 treesize of output 999254 [2022-11-03 02:43:06,687 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:43:06,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1149142 treesize of output 1098468 [2022-11-03 02:43:12,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1380136 treesize of output 1340536 [2022-11-03 02:43:15,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1512376 treesize of output 1489496 [2022-11-03 02:43:19,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1784384 treesize of output 1750308 [2022-11-03 02:43:51,405 WARN L234 SmtUtils]: Spent 22.74s on a formula simplification. DAG size of input: 2663 DAG size of output: 2663 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:44:08,110 WARN L234 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 2604 DAG size of output: 2602 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:44:33,503 WARN L234 SmtUtils]: Spent 22.19s on a formula simplification. DAG size of input: 2602 DAG size of output: 2602 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:44:45,562 WARN L234 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 2571 DAG size of output: 2571 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:45:00,018 WARN L234 SmtUtils]: Spent 11.93s on a formula simplification. DAG size of input: 2569 DAG size of output: 2569 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:45:21,115 WARN L234 SmtUtils]: Spent 16.42s on a formula simplification. DAG size of input: 2567 DAG size of output: 2567 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:45:30,968 WARN L234 SmtUtils]: Spent 7.48s on a formula simplification. DAG size of input: 2565 DAG size of output: 2565 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:45:52,575 WARN L234 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 2564 DAG size of output: 2564 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:46:11,033 WARN L234 SmtUtils]: Spent 16.03s on a formula simplification. DAG size of input: 2564 DAG size of output: 2564 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:46:26,011 WARN L234 SmtUtils]: Spent 12.68s on a formula simplification. DAG size of input: 2564 DAG size of output: 2564 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:46:59,468 WARN L234 SmtUtils]: Spent 28.04s on a formula simplification. DAG size of input: 2564 DAG size of output: 2564 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:47:28,859 WARN L234 SmtUtils]: Spent 26.94s on a formula simplification. DAG size of input: 2564 DAG size of output: 2564 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:47:39,633 WARN L234 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 2564 DAG size of output: 2564 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:47:52,697 WARN L234 SmtUtils]: Spent 10.59s on a formula simplification. DAG size of input: 2564 DAG size of output: 2564 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:48:22,926 WARN L234 SmtUtils]: Spent 27.68s on a formula simplification. DAG size of input: 2564 DAG size of output: 2564 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:48:29,766 WARN L234 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 1258 DAG size of output: 1258 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:48:36,600 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 1249 DAG size of output: 1249 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:48:43,262 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 1248 DAG size of output: 1248 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 02:48:49,895 WARN L234 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 1245 DAG size of output: 1245 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)